Jean S (writing at Climate Audit) spots the ultimate fib from Dr. Mann, and the placement of it could not be more hilarious.
No researchers in this field have ever, to our knowledge, “grafted the thermometer record onto” any reconstruction. It is somewhat disappointing to find this specious claim (which we usually find originating from industry-funded climate disinformation websites) appearing in this forum. Most proxy reconstructions end somewhere around 1980, for the reasons discussed above. Often, as in the comparisons we show on this site, the instrumental record (which extends to present) is shown along with the reconstructions, and clearly distinguished from them.
Now, look at what Jean S. has noticed in a publication from Dr. Mann.