
The “exoneration” by Climategate investigations (like Muir Russell) that never bother to talk to skeptics, create an impossible conundrum of having essentially a trial with judge, jury, reporters, spectators, and defendant, but no plaintiff. The plaintiff is locked outside the courtroom sitting in the hall hollering and hoping the jury hears some of what he has to say.
Given this, I thought it valuable to revisit this Caltech lecture on the state of science and consensus by the late Michael Crichton.
– Anthony Watts
Caltech Michelin Lecture – January 17, 2003
My topic today sounds humorous but unfortunately I am serious. I am going to argue that extraterrestrials lie behind global warming. Or to speak more precisely, I will argue that a belief in extraterrestrials has paved the way, in a progression of steps, to a belief in global warming.
Charting this progression of belief will be my task today. Let me say at once that I have no desire to discourage anyone from believing in either extraterrestrials or global warming. That would be quite impossible to do.
Rather, I want to discuss the history of several widely-publicized beliefs and to point to what I consider an emerging crisis in the whole enterprise of science-namely the increasingly uneasy relationship between hard science and public policy.
I have a special interest in this because of my own upbringing. I was born in the midst of World War II, and passed my formative years at the height of the Cold War. In school drills, I dutifully crawled under my desk in preparation for a nuclear attack.
It was a time of widespread fear and uncertainty, but even as a child I believed that science represented the best and greatest hope for mankind. Even to a child, the contrast was clear between the world of politics-a world of hate and danger, of irrational beliefs and fears, of mass manipulation and disgraceful blots on human history. In contrast, science held different values-international in scope, forging friendships and working relationships across national boundaries and political systems, encouraging a dispassionate habit of thought, and ultimately leading to fresh knowledge and technology that would benefit all mankind.
The world might not be a very good place, but science would make it better. And it did. In my lifetime, science has largely fulfilled its promise. Science has been the great intellectual adventure of our age, and a great hope for our troubled and restless world. But I did not expect science merely to extend lifespan, feed the hungry, cure disease, and shrink the world with jets and cell phones.
I also expected science to banish the evils of human thought—prejudice and superstition, irrational beliefs and false fears. I expected science to be, in Carl Sagan’s memorable phrase, “a candle in a demon haunted world.” And here, I am not so pleased with the impact of science. Rather than serving as a cleansing force, science has in some instances been seduced by the more ancient lures of politics and publicity.
Some of the demons that haunt our world in recent years are invented by scientists. The world has not benefited from permitting these demons to escape free. But let’s look at how it came to pass.
Cast your minds back to 1960. John F. Kennedy is president, commercial jet airplanes are just appearing, the biggest university mainframes have 12K of memory. And in Green Bank, West Virginia at the new National Radio Astronomy Observatory, a young astrophysicist named Frank Drake runs a two-week project called Ozma, to search for extraterrestrial signals. A signal is received, to great excitement. It turns out to be false, but the excitement remains.
In 1960, Drake organizes the first SETI conference, and came up with the now-famous Drake equation: N=N*fp ne fl fi fc fL
[where N is the number of stars in the Milky Way galaxy; fp is the fraction with planets; ne is the number of planets per star capable of supporting life; fl is the fraction of planets where life evolves; fi is the fraction where intelligent life evolves; and fc is the fraction that communicates; and fL is the fraction of the planet’s life during which the communicating civilizations live.]
This serious-looking equation gave SETI a serious footing as a legitimate intellectual inquiry. The problem, of course, is that none of the terms can be known, and most cannot even be estimated. The only way to work the equation is to fill in with guesses. And guesses-just so we’re clear-are merely expressions of prejudice.
Nor can there be “informed guesses.” If you need to state how many planets with life choose to communicate, there is simply no way to make an informed guess. It’s simply prejudice.
As a result, the Drake equation can have any value from “billions and billions” to zero. An expression that can mean anything means nothing. Speaking precisely, the Drake equation is literally meaningless, and has nothing to do with science. I take the hard view that science involves the creation of testable hypotheses. The Drake equation cannot be tested and therefore SETI is not science. SETI is unquestionably a religion.
Faith is defined as the firm belief in something for which there is no proof. The belief that the Koran is the word of God is a matter of faith. The belief that God created the universe in seven days is a matter of faith. The belief that there are other life forms in the universe is a matter of faith. There is not a single shred of evidence for any other life forms, and in forty years of searching, none has been discovered.There is absolutely no evidentiary reason to maintain this belief. SETI is a religion.
One way to chart the cooling of enthusiasm is to review popular works on the subject. In 1964, at the height of SETI enthusiasm, Walter Sullivan of the NY Times wrote an exciting book about life in the universe entitled WE ARE NOT ALONE. By 1995, when Paul Davis wrote a book on the same subject, he titled it ARE WE ALONE? ( Since 1981, there have in fact been four books titled ARE WE ALONE.) More recently we have seen the rise of the so-called “Rare Earth” theory which suggests that we may, in fact, be all alone.
Again, there is no evidence either way.
Back in the sixties, SETI had its critics, although not among astrophysicists and astronomers. The biologists and paleontologists were harshest. George Gaylord Simpson of Harvard sneered that SETI was a “study without a subject,” and it remains so to the present day. But scientists in general have been indulgent toward SETI, viewing it either with bemused tolerance, or with indifference. After all, what’s the big deal? It’s kind of fun. If people want to look, let them. Only a curmudgeon would speak harshly of SETI. It wasn’t worth the bother.
And of course, it is true that untestable theories may have heuristic value. Of course, extraterrestrials are a good way to teach science to kids. But that does not relieve us of the obligation to see the Drake equation clearly for what it is-pure speculation in quasi-scientific trappings.
The fact that the Drake equation was not greeted with screams of outrage-similar to the screams of outrage that greet each Creationist new claim, for example-meant that now there was a crack in the door, a loosening of the definition of what constituted legitimate scientific procedure. And soon enough, pernicious garbage began to squeeze through the cracks.
Now let’s jump ahead a decade to the 1970s, and Nuclear Winter. In 1975, the National Academy of Sciences reported on “Long-Term Worldwide Effects of Multiple Nuclear Weapons Detonations” but the report estimated the effect of dust from nuclear blasts to be relatively minor.
In 1979, the Office of Technology Assessment issued a report on “The Effects of Nuclear War” and stated that nuclear war could perhaps produce irreversible adverse consequences on the environment. However, because the scientific processes involved were poorly understood, the report stated it was not possible to estimate the probable magnitude of such damage.
Three years later, in 1982, the Swedish Academy of Sciences commissioned a report entitled “The Atmosphere after a Nuclear War: Twilight at Noon,” which attempted to quantify the effect of smoke from burning forests and cities. The authors speculated that there would be so much smoke that a large cloud over the northern hemisphere would reduce incoming sunlight below the level required for photosynthesis, and that this would last for weeks or even longer.
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| The Drake Equation. Pure science -or Pure Hooey? |
The following year, five scientists including Richard Turco and Carl Sagan published a paper in Science called “Nuclear Winter: Global Consequences of Multiple Nuclear Explosions.” This was the so-called TTAPS report, which attempted to quantify more rigorously the atmospheric effects, with the added credibility to be gained from an actual computer model of climate.
At the heart of the TTAPS undertaking was another equation, never specifically expressed, but one that could be paraphrased as follows:
Ds = Wn Ws Wh Tf Tb Pt Pr Pe etc
(The amount of tropospheric dust = # warheads x size warheads x warhead detonation height x flammability of targets x Target burn duration x Particles entering the Troposphere x Particle reflectivity x Particle endurance, and so on.)
The similarity to the Drake equation is striking. As with the Drake equation, none of the variables can be determined. None at all. The TTAPS study addressed this problem in part by mapping out different wartime scenarios and assigning numbers to some of the variables, but even so, the remaining variables were-and are-simply unknowable. Nobody knows how much smoke will be generated when cities burn, creating particles of what kind, and for how long. No one knows the effect of local weather conditions on the amount of particles that will be injected into the troposphere. No one knows how long the particles will remain in the troposphere. And so on.
And remember, this is only four years after the OTA study concluded that the underlying scientific processes were so poorly known that no estimates could be reliably made.
Nevertheless, the TTAPS study not only made those estimates, but concluded they were catastrophic. According to Sagan and his coworkers, even a limited 5,000 megaton nuclear exchange would cause a global temperature drop of more than 35 degrees Centigrade, and this change would last for three months.
The greatest volcanic eruptions that we know of changed world temperatures somewhere between .5 and 2 degrees Centigrade. Ice ages changed global temperatures by 10 degrees. Here we have an estimated change three times greater than any ice age.
One might expect it to be the subject of some dispute. But Sagan and his coworkers were prepared, for nuclear winter was from the outset the subject of a well-orchestrated media campaign. The first announcement of nuclear winter appeared in an article by Sagan in the Sunday supplement, Parade. The very next day, a highly-publicized, high-profile conference on the long-term consequences of nuclear war was held in Washington, chaired by Carl Sagan and Paul Ehrlich, the most famous and media-savvy scientists of their generation.
Sagan appeared on the Johnny Carson show 40 times. Ehrlich was on 25 times. Following the conference, there were press conferences, meetings with congressmen, and so on. The formal papers in Science came months later.
This is not the way science is done, it is the way products are sold. The real nature of the conference is indicated by these artists’ renderings of the effect of nuclear winter. (Not Shown)
I cannot help but quote the caption for figure 5: “Shown here is a tranquil scene in the north woods. A beaver has just completed its dam, two black bears forage for food, a swallow-tailed butterfly flutters in the foreground, a loon swims quietly by, and a kingfisher searches for a tasty fish.” Hard science if ever there was.
At the conference in Washington, during the question period, Ehrlich was reminded that after Hiroshima and Nagasaki, scientists were quoted as saying nothing would grow there for 75 years, but in fact melons were growing the next year. So, he was asked, how accurate were these findings now?
Ehrlich answered by saying “I think they are extremely robust. Scientists may have made statements like that, although I cannot imagine what their basis would have been, even with the state of science at that time, but scientists are always making absurd statements, individually, in various places. What we are doing here, however, is presenting a consensus of a very large group of scientists”
I want to pause here and talk about this notion of consensus, and the rise of what has been called consensus science. I regard consensus science as an extremely pernicious development that ought to be stopped cold in its tracks. Historically, the claim of consensus has been the first refuge of scoundrels; it is a way to avoid debate by claiming that the matter is already settled. Whenever you hear the consensus of scientists agrees on something or other, reach for your wallet, because you’re being had.
Let’s be clear: the work of science has nothing whatever to do with consensus. Consensus is the business of politics. Science, on the contrary, requires only one investigator who happens to be right, which means that he or she has results that are verifiable by reference to the real world.
In science consensus is irrelevant. What is relevant is reproducible results. The greatest scientists in history are great precisely because they broke with the consensus. There is no such thing as consensus science. If it’s consensus, it isn’t science. If it’s science, it isn’t consensus. Period.
In addition, let me remind you that the track record of the consensus is nothing to be proud of. Let’s review a few cases.
In past centuries, the greatest killer of women was fever following childbirth. One woman in six died of this fever.
In 1795, Alexander Gordon of Aberdeen suggested that the fevers were infectious processes, and he was able to cure them. The consensus said no.
In 1843, Oliver Wendell Holmes claimed puerperal fever was contagious, and presented compelling evidence. The consensus said no.
In 1849, Semmelweiss demonstrated that sanitary techniques virtually eliminated puerperal fever in hospitals under his management. The consensus said he was a Jew, ignored him, and dismissed him from his post. There was in fact no agreement on puerperal fever until the start of the twentieth century. Thus the consensus took one hundred and twenty five years to arrive at the right conclusion despite the efforts of the prominent “skeptics” around the world, skeptics who were demeaned and ignored. And despite the constant ongoing deaths of women.
There is no shortage of other examples. In the 1920s in America, tens of thousands of people, mostly poor, were dying of a disease called pellagra. The consensus of scientists said it was infectious, and what was necessary was to find the “pellagra germ.” The US government asked a brilliant young investigator, Dr. Joseph Goldberger, to find the cause. Goldberger concluded that diet was the crucial factor. The consensus remained wedded to the germ theory.
Goldberger demonstrated that he could induce the disease through diet. He demonstrated that the disease was not infectious by injecting the blood of a pellagra patient into himself, and his assistant. They and other volunteers swabbed their noses with swabs from pellagra patients, and swallowed capsules containing scabs from pellagra rashes in what were called “Goldberger’s filth parties.” Nobody contracted pellagra.
The consensus continued to disagree with him. There was, in addition, a social factor-southern States disliked the idea of poor diet as the cause, because it meant that social reform was required. They continued to deny it until the 1920s. Result-despite a twentieth century epidemic, the consensus took years to see the light.
Probably every schoolchild notices that South America and Africa seem to fit together rather snugly, and Alfred Wegener proposed, in 1912, that the continents had in fact drifted apart. The consensus sneered at continental drift for fifty years. The theory was most vigorously denied by the great names of geology-until 1961, when it began to seem as if the sea floors were spreading. The result: it took the consensus fifty years to acknowledge what any schoolchild sees.
And shall we go on? The examples can be multiplied endlessly. Jenner and smallpox, Pasteur and germ theory. Saccharine, margarine, repressed memory, fiber and colon cancer, hormone replacement therapy. The list of consensus errors goes on and on.
Finally, I would remind you to notice where the claim of consensus is invoked. Consensus is invoked only in situations where the science is not solid enough.
Nobody says the consensus of scientists agrees that E=mc2. Nobody says the consensus is that the sun is 93 million miles away. It would never occur to anyone to speak that way.
But back to our main subject. What I have been suggesting to you is that nuclear winter was a meaningless formula, tricked out with bad science, for policy ends. It was political from the beginning, promoted in a well-orchestrated media campaign that had to be planned weeks or months in advance.
Further evidence of the political nature of the whole project can be found in the response to criticism. Although Richard Feynman was characteristically blunt, saying, “I really don’t think these guys know what they’re talking about,” other prominent scientists were noticeably reticent. Freeman Dyson was quoted as saying “It’s an absolutely atrocious piece of science but who wants to be accused of being in favor of nuclear war?” And Victor Weisskopf said, “The science is terrible but—perhaps the psychology is good.”
The nuclear winter team followed up the publication of such comments with letters to the editors denying that these statements were ever made, though the scientists since then have subsequently confirmed their views. At the time, there was a concerted desire on the part of lots of people to avoid nuclear war. If nuclear winter looked awful, why investigate too closely? Who wanted to disagree? Only people like Edward Teller, the “father of the H bomb.”
Teller said, “While it is generally recognized that details are still uncertain and deserve much more study, Dr. Sagan nevertheless has taken the position that the whole scenario is so robust that there can be little doubt about its main conclusions.”
Yet for most people, the fact that nuclear winter was a scenario riddled with uncertainties did not seem to be relevant. I say it is hugely relevant. Once you abandon strict adherence to what science tells us, once you start arranging the truth in a press conference, then anything is possible.
In one context, maybe you will get some mobilization against nuclear war. But in another context, you get Lysenkoism. In another, you get Nazi euthanasia. The danger is always there, if you subvert science to political ends.
That is why it is so important for the future of science that the line between what science can say with certainty, and what it cannot, be drawn clearly-and defended.
What happened to Nuclear Winter? As the media glare faded, its robust scenario appeared less persuasive; John Maddox, editor of Nature, repeatedly criticized its claims; within a year, Stephen Schneider, one of the leading figures in the climate model, began to speak of “nuclear autumn.” It just didn’t have the same ring.
A final media embarrassment came in 1991, when Carl Sagan predicted on Nightline that Kuwaiti oil fires would produce a nuclear winter effect, causing a “year without a summer,” and endangering crops around the world. Sagan stressed this outcome was so likely that “it should affect the war plans.” None of it happened.
What, then, can we say were the lessons of Nuclear Winter? I believe the lesson was that with a catchy name, a strong policy position and an aggressive media campaign, nobody will dare to criticize the science, and in short order, a terminally weak thesis will be established as fact.
After that, any criticism becomes beside the point. The war is already over without a shot being fired. That was the lesson, and we had a textbook application soon afterward, with second hand smoke.
In 1993, the EPA announced that second-hand smoke was “responsible for approximately 3,000 lung cancer deaths each year in nonsmoking adults,” and that it ” impairs the respiratory health of hundreds of thousands of people.” In a 1994 pamphlet the EPA said that the eleven studies it based its decision on were not by themselves conclusive, and that they collectively assigned second-hand smoke a risk factor of 1.19. (For reference, a risk factor below 3.0 is too small for action by the EPA. or for publication in the New England Journal of Medicine, for example.)
Furthermore, since there was no statistical association at the 95% confidence limits, the EPA lowered the limit to 90%. They then classified second-hand smoke as a Group-A Carcinogen.
This was openly fraudulent science, but it formed the basis for bans on smoking in restaurants, offices, and airports. California banned public smoking in 1995. Soon, no claim was too extreme. By 1998, the Christian Science Monitor was saying that “Second-hand smoke is the nation’s third-leading preventable cause of death.” The American Cancer Society announced that 53,000 people died each year of second-hand smoke. The evidence for this claim is nonexistent.
In 1998, a Federal judge held that the EPA had acted improperly, had “committed to a conclusion before research had begun”, and had “disregarded information and made findings on selective information.”
The reaction of Carol Browner, head of the EPA was: “We stand by our science; there’s wide agreement. The American people certainly recognize that exposure to second hand smoke brings a whole host of health problems.”
Again, note how the claim of consensus trumps science. In this case, it isn’t even a consensus of scientists that Browner evokes! It’s the consensus of the American people.
Meanwhile, ever-larger studies failed to confirm any association. A large, seven-country WHO study in 1998 found no association. Nor have well-controlled subsequent studies, to my knowledge. Yet we now read, for example, that second-hand smoke is a cause of breast cancer. At this point you can say pretty much anything you want about second-hand smoke.
As with nuclear winter, bad science is used to promote what most people would consider good policy. I certainly think it is. I don’t want people smoking around me. So who will speak out against banning second-hand smoke? Nobody, and if you do, you’ll be branded a shill of RJ Reynolds. A big tobacco flunky. But the truth is that we now have a social policy supported by the grossest of superstitions.
And we’ve given the EPA a bad lesson in how to behave in the future. We’ve told them that cheating is the way to succeed.
As the twentieth century drew to a close, the connection between hard scientific fact and public policy became increasingly elastic. In part this was possible because of the complacency of the scientific profession; in part because of the lack of good science education among the public; in part, because of the rise of specialized advocacy groups which have been enormously effective in getting publicity and shaping policy; and in great part because of the decline of the media as an independent assessor of fact.
The deterioration of the American media is dire loss for our country. When distinguished institutions like the New York Times can no longer differentiate between factual content and editorial opinion, but rather mix both freely on their front page, then who will hold anyone to a higher standard?
And so, in this elastic anything-goes world where science-or non-science-is the hand maiden of questionable public policy, we arrive at last at global warming. It is not my purpose here to rehash the details of this most magnificent of the demons haunting the world. I would just remind you of the now-familiar pattern by which these things are established.
Evidentiary uncertainties are glossed over in the unseemly rush for an overarching policy, and for grants to support the policy by delivering findings that are desired by the patron.
Next, the isolation of those scientists who won’t get with the program, and the characterization of those scientists as outsiders and “skeptics” in quotation marks-suspect individuals with suspect motives, industry flunkies, reactionaries, or simply anti-environmental nut-cases.
In short order, debate ends, even though prominent scientists are uncomfortable about how things are being done. When did “skeptic” become a dirty word in science? When did a skeptic require quotation marks around it?
To an outsider, the most significant innovation in the global warming controversy is the overt reliance that is being placed on models. Back in the days of nuclear winter, computer models were invoked to add weight to a conclusion: “These results are derived with the help of a computer model.”
But now, large-scale computer models are seen as generating data in themselves. No longer are models judged by how well they reproduce data from the real world-increasingly, models provide the data.
As if they were themselves a reality. And indeed they are, when we are projecting forward. There can be no observational data about the year 2100. There are only model runs. This fascination with computer models is something I understand very well.
Richard Feynmann called it a disease. I fear he is right. Because only if you spend a lot of time looking at a computer screen can you arrive at the complex point where the global warming debate now stands. Nobody believes a weather prediction twelve hours ahead. Now we’re asked to believe a prediction that goes out 100 years into the future?
And make financial investments based on that prediction? Has everybody lost their minds?
Stepping back, I have to say the arrogance of the model-makers is breathtaking. There have been, in every century, scientists who say they know it all. Since climate may be a chaotic system-no one is sure-these predictions are inherently doubtful, to be polite. But more to the point, even if the models get the science spot-on, they can never get the sociology. To predict anything about the world a hundred years from now is simply absurd.
Look: If I was selling stock in a company that I told you would be profitable in 2100, would you buy it? Or would you think the idea was so crazy that it must be a scam?
Let’s think back to people in 1900 in, say, New York. If they worried about people in 2000, what would they worry about? Probably: Where would people get enough horses? And what would they do about all the horse****?
Horse pollution was bad in 1900, think how much worse it would be a century later, with so many more people riding horses? But of course, within a few years, nobody rode horses except for sport.
And in 2000, France was getting 80% its power from an energy source that was unknown in 1900. Germany, Switzerland, Belgium and Japan were getting more than 30% from this source, unknown in 1900. Remember, people in 1900 didn’t know what an atom was.
They didn’t know its structure. They also didn’t know what a radio was, or an airport, or a movie, or a television, or a computer, or a cell phone, or a jet, an antibiotic, a rocket, a satellite, an MRI, ICU, IUD, IBM, IRA, ERA, EEG, EPA, IRS, DOD, PCP, HTML, internet. interferon, instant replay, remote sensing, remote control, speed dialing, gene therapy, gene splicing, genes, spot welding, heat-seeking, bipolar, prozac, leotards, lap dancing, email, tape recorder, CDs, airbags, plastic explosive, plastic, robots, cars, liposuction, transduction, superconduction, dish antennas, step aerobics, smoothies, twelve-step, ultrasound, nylon, rayon, teflon, fiber optics, carpal tunnel, laser surgery, laparoscopy, corneal transplant, kidney transplant, AIDS. None of this would have meant anything to a person in the year 1900. They wouldn’t know what you are talking about.
Now. You tell me you can predict the world of 2100. Tell me it’s even worth thinking about. Our models just carry the present into the future. They’re bound to be wrong. Everybody who gives a moment’s thought knows it.
I remind you that in the lifetime of most scientists now living, we have already had an example of dire predictions set aside by new technology. I refer to the green revolution. In 1960, Paul Ehrlich said, “The battle to feed humanity is over. In the 1970s the world will undergo famines-hundreds of millions of people are going to starve to death.”
Ten years later, he predicted four billion people would die during the 1980s, including 65 million Americans. The mass starvation that was predicted never occurred, and it now seems it isn’t ever going to happen. Nor is the population explosion going to reach the numbers predicted even ten years ago.
In 1990, climate modelers anticipated a world population of 11 billion by 2100. Today, some people think the correct number will be 7 billion and falling. But nobody knows for sure. But it is impossible to ignore how closely the history of global warming fits on the previous template for nuclear winter.
Just as the earliest studies of nuclear winter stated that the uncertainties were so great that probabilities could never be known, so, too the first pronouncements on global warming argued strong limits on what could be determined with certainty about climate change.
The 1995 IPCC draft report said, “Any claims of positive detection of significant climate change are likely to remain controversial until uncertainties in the total natural variability of the climate system are reduced.” It also said, “No study to date has positively attributed all or part of observed climate changes to anthropogenic causes.”
Those statements were removed, and in their place appeared: “The balance of evidence suggests a discernable human influence on climate.” What is clear, however, is that on this issue, science and policy have become inextricably mixed to the point where it will be difficult, if not impossible, to separate them out. It is possible for an outside observer to ask serious questions about the conduct of investigations into global warming, such as whether we are taking appropriate steps to improve the quality of our observational data records, whether we are systematically obtaining the information that will clarify existing uncertainties, whether we have any organized disinterested mechanism to direct research in this contentious area.
The answer to all these questions is no. We don’t. In trying to think about how these questions can be resolved, it occurs to me that in the progression from SETI to nuclear winter to second-hand smoke to global warming, we have one clear message, and that is that we can expect more and more problems of public policy dealing with technical issues in the future-problems of ever greater seriousness, where people care passionately on all sides.
And at the moment we have no mechanism to get good answers. So I will propose one. Just as we have established a tradition of double-blinded research to determine drug efficacy, we must institute double-blinded research in other policy areas as well. Certainly the increased use of computer models, such as GCMs, cries out for the separation of those who make the models from those who verify them.
The fact is that the present structure of science is entrepreneurial, with individual investigative teams vying for funding from organizations that all too often have a clear stake in the outcome of the research-or appear to, which may be just as bad. This is not healthy for science.
Sooner or later, we must form an independent research institute in this country. It must be funded by industry, by government, and by private philanthropy, both individuals and trusts. The money must be pooled, so that investigators do not know who is paying them. The institute must fund more than one team to do research in a particular area, and the verification of results will be a foregone requirement: teams will know their results will be checked by other groups.
In many cases, those who decide how to gather the data will not gather it, and those who gather the data will not analyze it. If we were to address the land temperature records with such rigor, we would be well on our way to an understanding of exactly how much faith we can place in global warming, and therefore with what seriousness we must address this.
I believe that as we come to the end of this litany, some of you may be saying, well what is the big deal, really. So we made a few mistakes. So a few scientists have overstated their cases and have egg on their faces. So what?
Well, I’ll tell you.
In recent years, much has been said about the post-modernist claims about science to the effect that science is just another form of raw power, tricked out in special claims for truth-seeking and objectivity that really have no basis in fact. Science, we are told, is no better than any other undertaking. These ideas anger many scientists, and they anger me. But recent events have made me wonder if they are correct.
We can take as an example the scientific reception accorded a Danish statistician, Bjorn Lomborg, who wrote a book called The Skeptical Environmentalist.
The scientific community responded in a way that can only be described as disgraceful. In professional literature, it was complained he had no standing because he was not an earth scientist. His publisher, Cambridge University Press, was attacked with cries that the editor should be fired, and that all right-thinking scientists should shun the press. The past president of the AAAS wondered aloud how Cambridge could have ever “published a book that so clearly could never have passed peer review.” (But of course, the manuscript did pass peer review by three earth scientists on both sides of the Atlantic, and all recommended publication.)
But what are scientists doing attacking a press? Is this the new McCarthyism-coming from scientists? Worst of all was the behavior of the Scientific American, which seemed intent on proving the post-modernist point that it was all about power, not facts.
The Scientific American attacked Lomborg for eleven pages, yet only came up with nine factual errors despite their assertion that the book was “rife with careless mistakes.”
It was a poor display, featuring vicious ad hominem attacks, including comparing him to a Holocaust denier. The issue was captioned: “Science defends itself against the Skeptical Environmentalist.”
Really. Science has to defend itself? Is this what we have come to? When Lomborg asked for space to rebut his critics, he was given only a page and a half. When he said it wasn’t enough, he put the critics’ essays on his web page and answered them in detail.
Scientific American threatened copyright infringement and made him take the pages down. Further attacks since, have made it clear what is going on. Lomborg is charged with heresy. That’s why none of his critics needs to substantiate their attacks in any detail. That’s why the facts don’t matter.
That’s why they can attack him in the most vicious personal terms. He’s a heretic. Of course, any scientist can be charged as Galileo was charged. I just never thought I’d see the Scientific American in the role of Mother Church.
Is this what science has become? I hope not. But it is what it will become, unless there is a concerted effort by leading scientists to aggressively separate science from policy.
The late Philip Handler, former president of the National Academy of Sciences, said that “Scientists best serve public policy by living within the ethics of science, not those of politics. If the scientific community will not unfrock the charlatans, the public will not discern the difference– science and the nation will suffer.”
Personally, I don’t worry about the nation. But I do worry about science.
Sources:
Michael Crichton’s speeches and essays at these two URLs
http://www.fileindexer.com/find/Michael-Crichton-Speeches
http://www.fileindexer.com/find/Michael-Crichton-essays
Crichton’s official web page:
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Micahel Crichton was true believer in his own deluded ideas, on all sides. He also thought the patents on genes were kiling innovation in medicine (the opposite is actually true). LEts not get too excited about any position Crichton took, for or against us.
Dave H
I’m an experimental physicist and I have felt the urge to respond to what I think is your confusion on an issue you brought up
To be frank: no there isn’t a consensus on Newtonian mechanics and relativity, because one replaces the other. There is still doubt about relativity from some quarters, even how it was first formulated but because a lot of people have verified by TEST that the theory gives some results..it will do for now. And people are still testing it. That isn’t consensus on the theory its consensus on that it will do for now but we will keep testing the fundamentals of it.
The periodic table was an idea based on chemistry – some parts were a guess, an extrapolation, a lot was tested and re-tested. But still it has been modified: atomic weights changed. It was only after quantum mechanics could the idea be really investigated. And you know what, people are still adding to it..but no one really minds because it will do for now.
Plate tectonics – there are two competing theories that even I know about – one is the idea of solid plates, the other is of a superviscous liquid – the physics looks similar but long term effects are different – people are still testing it but you know what…it will do for now.
You really want to do natural selection? Darwin’s theory was very vague. It talked about the fittest species surviving which made some sense. Yet it does not explain any reason at all why we still have junk genes or why some species never seemed to evolve but are still here. It was only in recent years with the ideas, yes of evolutionary biology, that a theory like The Red Queen came up..but it is still decisive. Still you know what it will do for now.
BTW ‘it will do for now’ does not mean consensus – it means we are only as good as what we know and have tested. Or in layman’s terms: you are only the sum of your experiences up until now. Tomorrow, if it exists for you, is always a guess.
The only people who think that science deals in consensus are lazy people who don’t actually go and ask a real scientist what the state of affairs is. And then ask a lot more.
Oh wait, doesn’t Anthony kind of do that already?
Go. Figure.
Dave H says: July 9, 2010 at 9:15 am
Dave H It seems to me by your comment that you prove the thrust of one limb of Crichton’s argument.
Doug
I remember picking up a copy of ‘State of Fear’ in an airport when it came out (in paperback I suppose) and reading over the course of my trip.
I can pinpoint that as the time I awoke to the reality of this nonsense, as until then I was a confirmed ‘believer’.
I seem to remember a preface or addendum with very similar content to this speech – can anyone confirm if it was this actual speech at Caltech?
RIP Michael – thank you for setting me on the right path.
There is some criticism of the use of the word consensus and I think this may be as a result of confusion between two definitions of consensus (Merriam-Webster).
In one case it means general agreement, unanimity, and in science there are innumerable instances of consensus over what is accepted generally as scientific fact.
Its alternative meaning is group solidarity in belief or sentiment. To me, it is clear that it is this mode of consensus that Crichton was referring to.
michaeljgardner says:
July 9, 2010 at 12:18 pm
> I think you’re applying too broad of a definition to the word “consensus”. What I took from Chrichton’s essay was that “consensus” meant agreed upon notions without the benefit of factual support through the repeatibility of an experimental method. Which is my perception of the state of the AGW science.
In my opinion, you just responded by defining the terms “consensus” and “AGW science” yourself, in a specific way that allowed you to dismiss my argument.
I believe that is known as “begging the question”.
> The difference as I see is that one is based solely on agreement, the other on fact.
There is this false framing going on, where some science is “fact” and other science that you happen not to agree with is “based solely on agreement”, thus putting it on an unsound basis you can dismiss.
I don’t see any useful way we can have a reasonable discussion on those terms. I accept the evidence for AGW, which – like an awful lot of science – is based on sound physical principles, experimental results, empirical observations, and simulations. However, unless you also accept the validity of this foundation, I *cannot* make a point that you cannot counter by dismissing AGW as “not fact” on your terms. Unless you accept that there is a sound, testable, physical scientific basis to work from, I can’t make any further contribution on the “consensus” issue.
What I would say is that:
> Where you claim concensus exists in science, it is not “concensus” but the agreed upon results from a repeatible expiremental method.
The consensus exists around the explanation of those results and observations. We observe perturbations in Mercury’s orbit – do we attribute those to epicycles or relativistic effects? We cannot account for rotational speed of distant galaxies – do we need to revise relativity, or attribute it to dark matter? We carry out an experiment demonstrating what appears to be speciation on a small scale – do we attribute that to evolutionary processes, or the unseen hand of a divine creator? The consensus forms – with a lot of kicking and screaming in the journals – around what is the best explanation for observations, and what has the best predictive power for future events.
The only reason you hear about a “consensus” on AGW more than any other science is that it is a subject that has become very publicly steeped in political controversy, and because the implications are far reaching and serious. Evolution suffered the same controvery, and “consensus” was mentioned there frequently. There was a consensus on CFCs and the Ozone layer, and acid rain, and many of these anti-consensus arguments were trotted out then as well by those that sought to preserve the status quo. Likewise relativity – you don’t hear “consensus” bandied about much, unless you encounter the anti-relativity fringe.
This is what James Lovelock thinks of modern science.
On Climategate:
“I was utterly disgusted. My second thought was that it was inevitable. It was bound to happen. Science, not so very long ago, pre-1960s, was largely vocational. Back when I was young, I didn’t want to do anything else other than be a scientist. They’re not like that nowadays. They don’t give a damn. They go to these massive, mass-produced universities and churn them out. They say: “Science is a good career. You can get a job for life doing government work.” That’s no way to do science.
I have seen this happen before, of course. We should have been warned by the CFC/ozone affair because the corruption of science in that was so bad that something like 80% of the measurements being made during that time were either faked, or incompetently done.”
plus
“If we had some really good scientists it wouldn’t be a problem, but we’ve got so many dumbos who just can’t say anything, or who are afraid to say anything. They’re not free agents.”
and
“We haven’t got the physics worked out yet. One of the chiefs once said to me that he agreed that they should include the biology in their models, but he said they hadn’t got the physics right yet and it would be five years before they do. So why on earth are the politicians spending a fortune of our money when we can least afford it on doing things to prevent events 50 years from now? They’ve employed scientists to tell them what they want to hear.”
From “James Lovelock on the value of sceptics and why Copenhagen was doomed”
http://www.guardian.co.uk/environment/blog/2010/mar/29/james-lovelock
That, to me, is the best I have ever read.
I had all but given up on my politicians, but this just has to be sent to my
Member of Parliament; my Environment Minister; my Member of the Legislative Assembly; my Mayor; and The Alberta Premier.
Every time I send them something they send me back the same stock letter that goes to the media, or anyone else.
“We are committed to …. blah blah blah… Carbon Capture and Storage .. blah blah blah, and $2billion dollars of taxpayers funds to climate change strategy to reduce emissions”
They, being politicians, believe the avowed consensus. [the recent poll shows 55% do NOT believe in CAGW vs 45% who do].
I am totally disgusted that they will not even say that the CCS program should be put on hold because of Climatgate. AND they are supposedly Conservatives.
Replace the alien with Al Gore.
Dave H says:
July 9, 2010 at 1:04 pm
If kids are to play they need a consensus among them, those not sharing the same toys/games are the “bad kids”.
Dave H says,
“Crichton then goes on to undermine his own point with respect to AGW. Yes, science has been wrong in the past, and consensus viewpoints have been wrong in the past – but the progression is almost always from worse understanding to better – a *new* consensus forms around the new ideas and they become accepted.”
How is Crichton undermining his own point? Those erroneous hypotheses are not refined into “new” correct ideas as you seem to be implying in your post: whether we are talking about the bad air theory of disease, germ theory of pelagra, eugenics, piltdown man, rejection of continental drift, stress causation of stomach ulcers, nuclear winter. They have all been consigned to the garbage as being totally and completely wrong. And the point he was trying to make most strongly, is that the consensus views that persists the longest in the face of contradictory evidence, are those embellished in some political or social narratives. Eugenics, nuclear winter and AGW are the most notable examples and AGW is the most extreme of them all. So AGW, will eventually join eugenics and all the others in that metaphorical garbage can.
“Strong words and provably untrue – see eg. my examples of evolutionary biology, germ theory etc. If the existence of a consensus invalidates science, nothing would ever be “true”. The invalidation of a consensus would logically create a new consensus that the old one was invalid – the existence of which immediately invalidate itself, etc etc. Its an illogical argument that’s easy to say and sounds nice to those inclined to believe it, but one that I find simplistic and political rather than logical and scientific.”
It is a straw man argument to counter that the rejection of an old hypothesis is also a consenus – and must therefore invalidate itself. Nobody, including Crichton, is making the utterly absurd statement that whenever a consensus exists then it must be false. What seems to be clear to everyone on this blog but you, is the idea that a consensus adds nothing to the value of a scientific postulate and it does not make that postulate more likely to be true. Thats it. No need to tie yourself up in knots with “all Cretans are liars,” type fallacies.
“And I already mentioned his biased misrepresentation of Bjorn Lomberg.”
So reject the Bjorn Lomberg incident as “biased misrepresentation”. Biased how? Show us some facts instead of just arm waving.
You can find a collection of Michael Crichton’s speeches and essays at:
http://www.fileindexer.com/find/Michael-Crichton-Speeches
http://www.fileindexer.com/find/Michael-Crichton-essays
Dave H says:
July 9, 2010 at 1:04 pm
I don’t see any useful way we can have a reasonable discussion on those terms. I accept the evidence for AGW, which – like an awful lot of science – is based on sound physical principles, experimental results, empirical observations, and simulations. However, unless you also accept the validity of this foundation, I *cannot* make a point that you cannot counter by dismissing AGW as “not fact” on your terms. Unless you accept that there is a sound, testable, physical scientific basis to work from, I can’t make any further contribution on the “consensus” issue.
Thanks for the reply.
In short, I’ve yet to see any sound science that proves AGW, but I have heard a lot about the consensus. I’m open to having a reasonable discussion with you though. Maybe you can help me with the “sound, testable, physical scientific basis” part.
Cheers,
Michael
@ur momisugly Dave H
You so represent exactly what he was talking about in the lecture.
MC was clearly one of the cleanest thinkers of our time.
If the general public can’t tell the difference between science & politics, then real science has little chance of adding real value to society and that is a net negative to everyone, regardless of your politics.
All scientists need to be aware of their duty to provide objective analysis to society. Period. If they feel inclined to make political statements, they need to get out of science for the benefit of science. Period.
Unfortunately, I only see the problem getting worse.
Everything has become politicized.
“AGW” = politicized weather.
“Organic” food = politicized eating.
“Naturopathic” = politicized medicine.
” Hybrid cars” or “SUV’s” = politicized driving.
“Green” , “Sustainable” = politicized living.
I could go on & on (please add your own examples).
The common theme with all of these is you can find “scientific” research to support these subjects, but the reality is that it is just politics , policy & personal bias parading as science. And because of examples from the past, such as those listed by MC, it is now accepted practice to represent politics as “science”. And because scientists are allowing this to happen, science as a whole is failing society.
Universities should be teaching students about their moral obligation to give objective analysis to society. Yet I do not see this happening. In fact, I have an example from my own alma mater doing just the opposite – encouraging students to cast their science in a non-objective framework to the community. It is a sad state of affairs & I think this period of time will be judged harshly by the future.
May I remind everyone of the hazard of playing catch as catch can with snout nosed ungluates in slurried soil or clay!
(Do you understand this? The ungluate has great joy, and YOU end up in need of sanitary renovation…)
You can find a collection of Michael Crichton’s speeches and essays at:
http://www.fileindexer.com/find/Michael-Crichton-Speeches
http://www.fileindexer.com/find/Michael-Crichton-essays
This is a link to his official biography and CV:
http://www.crichton-official.com/aboutmichaelcrichton-biography.html
micky c says:
July 9, 2010 at 12:50 pm
> I’m an experimental physicist and I have felt the urge to respond to what I think is your confusion on an issue you brought up
No confusion, I was actually hoping to lead into some of the issues you raised.
> To be frank: no there isn’t a consensus on Newtonian mechanics and relativity, because one replaces the other.
Yes – hence the past tense when referring to Newton in my original comment. There *was* a consensus that Newton best explained the movement of celestial bodies. That’s not really the case any more.
> There is still doubt about relativity from some quarters, even how it was first formulated but because a lot of people have verified by TEST that the theory gives some results..it will do for now. And people are still testing it. That isn’t consensus on the theory its consensus on that it will do for now but we will keep testing the fundamentals of it.
This is precisely my point. Consensus forms only in broad terms around what works. We can use relativity because it has predictive power – but there is still room to argue about details within that larger framework.
> The periodic table was an idea based on chemistry – some parts were a guess, an extrapolation, a lot was tested and re-tested. But still it has been modified: atomic weights changed. It was only after quantum mechanics could the idea be really investigated. And you know what, people are still adding to it..but no one really minds because it will do for now.
Exactly – its the progress from less knowledge to more. It had predictive power because it had *gaps* that allowed us to guess the properties of the elements we were yet to discover – yet we could still argue about details within a broader consensus that it was describing a useful chemical model.
> You really want to do natural selection? Darwin’s theory was very vague. It talked about the fittest species surviving which made some sense. Yet it does not explain any reason at all why we still have junk genes or why some species never seemed to evolve but are still here. It was only in recent years with the ideas, yes of evolutionary biology, that a theory like The Red Queen came up..but it is still decisive. Still you know what it will do for now.
I’d go further than that. Darwin’s theory is in no way some sacrosanct thing that has remained unchanged – it has grown and adapted (dare I say, evolved?). There is huge argument over some of the detail, and things like cross-gene transfer really shake up our understanding of what’s possible and how things work. But where there *is* a consensus is that speciation can be explained by natural processes like selection, and that the existence of evolution is not in any doubt. So, we came along, carried on Darwin’s work, fixed it where it was wrong, developed new, more detailed theories to explain new observations – do we ever refer to his work as “discredited”? No, we accept it as a foundation upon which we build better knowledge.
This is precisely the same terms as the consensus for AGW. There is broad agreement that observational data shows the earth is warming, and that the principle cause is human emissions of CO2. The rest of the detail? massively debated. What’s the precise climate sensitivity? How best can we reconstruct the paleoclimate? How unprecedented is the warming? What’s the precise contribution of Solar and ENSO cycles to the 20th century trend? These are all issues with greater or lesser degrees of agreement around them.
So I would say – representing the notion of a scientific consensus as complete agreement in all details across the entirety of a scientific field is an unrealistic strawman.
@Dave H:
Consensus is a political term, not a scientific term.
Consensus is not how science is done. Scientists don’t get together and vote on the facts. The chemical formula for water is not determined by consensus.
Dave H says:
July 9, 2010 at 9:15 am
[…]
“In an environment like this, Crichton was free to say what he liked without fear of a detailed rebuttal, and that included thorough misrepresentations and logical fallacies. His framing of the criticism of Bjorn Lomberg is disgracefully biased, and his leap to the Galileo defence shocking and arrogant. Presenting a lecture like this from 7 years ago as if it has not been dissected and shown to be unsound rhetoric in so many ways in the intervening period […]”
Dave H, I’d be interested in reading the dissection of this lecture showing the unsound rhetoric. Would you please point me to the source(s) you’re referring to so I can do some further reading? Thanks in advance.
H.R.
Wow. Absolutely WOW.
And to think he said it 7 years ago…
Thanks Anthony for posting this.
I am going to circulate it to as many people as I can.
Are we alone?
I cannot know the numbers of any certainty as to how many planets are in this Galaxy having life as we know it.
I can tell you that with our fastest rocket presently, it will take roughly 60,000 years to get to Beta Centauri.
Unless there is intelligent life hiding on another planet in our Solar System, we are alone in Space & Time.
There is the bright, shiny, beautiful, wondrous side of the force of science and every other field of human endeavor; and there is the dull, scheming, treacherous, political, ugly, dark side of the force of science, and every other field of human endeavor.
The majority of ‘adults’ -shall we say- were bright eyed children who wanted to achieve great things for the benefit of all mankind. The vast majority of them lost their dream along the way in the ‘real‘ world. They became pragmatists. They learned that if you want to get along, you gotta’ go along.
Oh, for the return of the Jedi…
Vincent says:
July 9, 2010 at 1:16 pm
> They have all been consigned to the garbage as being totally and completely wrong.
And a *new* consensus formed around the better explanation – so why should we distrust consensus again?
> And the point he was trying to make most strongly, is that the consensus views that persists the longest in the face of contradictory evidence, are those embellished in some political or social narratives. Eugenics, nuclear winter and AGW are the most notable examples and AGW is the most extreme of them all. So AGW, will eventually join eugenics and all the others in that metaphorical garbage can.
Or alternatively, the *social and political resistence* to the increasing scientific evidence for AGW will be consigned to the garbage can.
> Nobody, including Crichton, is making the utterly absurd statement that whenever a consensus exists then it must be false.
No, in fact what he said was:
> If it’s consensus, it isn’t science. If it’s science, it isn’t consensus. Period.
The whole pitch is distrust anything that is presented to you as a consensus in science. This is illogical, and unfounded. Do you disagree that there is a consensus that smoking causes cancer? Do you disagree that much of the health legislation surrounding smoking emerged precisely because there was a broad consensus on this issue, despite disagreement and uncertainty about specific details and risks? Should climate scientists pretend that there *isn’t* a consensus about the basics of AGW? Would that make the science more sound?
The existence of a consensus is not a sound basis for rejecting science.
> So reject the Bjorn Lomberg incident as “biased misrepresentation”. Biased how? Show us some facts instead of just arm waving.
Its hard enough sticking to just the consensus issue on this thread. In my view, Crichton’s interpretation leaves absolutely no room for Lomberg to be in the wrong. He describes the reaction as “disgusting” and presupposes much based on his acceptance of Lomberg’s opinion. He describes Lomberg solely as someone who dared to challenge an orthodoxy and was attacked for it – whereas based on the evidence you could equally describe him as someone who thoroughly misrepresented the available science for political and financial capital, and received precisely the reaction one would expect from the scientists he had misrepresented. Crichton does not supply any real evidence to weight the argument to his side, just asserts it in emotive language really – and if you’re predisposed to believe him you will, but that doesn’t necessarily make him *right*. And his complaint that the published critique *only* mentioned 9 errors – well, could it not equally have been listing 9 example errors? Crichton doesn’t make this clear, just slants his reportage of the incident to what he wants you to believe.
But the substance of Bjorn Lomberg is a different issue – that’s just my opinion of the biased way Crichton described the events. And actually referencing Galileo in this context is offensive.
It is a consensual truth that wherever there is consensus, nature behaves in an unexpected by the consensus way. What a pity!
One major example: THE SUN