In hindsight, I suppose I should have appealed to the fact that critiquing the seminal papers in the field is a serious data set bias and that trying to "learn to critique" on the best papers ever written in a field was less likely to produce a useful "critiquing" skill and more likely to produce some overfitted garbage skill, but, hey, I hadn't taken AI yet! I didn't know how to express that.
(It did produce a garbage skill, too. I tried writing "real" critiques using my brain, but after getting Cs and Ds for the first couple, I learned my lesson, and mechanically spit out "Needs more data", "should have studied more", and as appropriate, "sample sizes were too small". Except for that last one, regardless of the study. Bam. A series of easy As. Sigh. I liked college over all, but there were some places I could certainly quibble.)
Anyhow, this is the paper that needs to be assigned towards the end of the semester, and students asked to "critique" it. It's a much better member of the training data set for this sort of skill.