Sometimes my work leads me in interesting directions. Working in East Coast Big City means that I occasionally deal with contamination that is centuries old. And because geology doesn't necessarily change that much in a few centuries, occasionally I end up digging into papers and manuscripts that are more than 100 years old.
One particular thesis had some pretty sharp opinions on previous work. I've redacted it because it's subject is too close to my current work, but you'll get the gist:
"[Previous investigators' work] I am unable to accept, on the palpable errors in their field investigations. I do not believe that [this correlation] is to be accepted. I dissent from the conclusions of these papers, because the structure of this region has been worked out along untenable lines. Professor X makes the assertion that the cleavage and bedding practically coincide, and my own observations disprove this statement. Professor Y, who has been able to recognize these two structures, has evidently not made any use of the information."
I shall endeavor to work "has evidently not made any use of this information" into my next set of review comments.