For the first time this year, I did a couple of review questions in class today to make sure stuff from last class was bedding in. When I said at the end, after questions were off the screen, that both came from last year’s tests, several people asked me to post them. So here they are.

Question 1 (Ethics of refusing experimental treatments in cancer trials)

Question 2 (Why large double-blind trials are often needed to identify dangerous medical practices).

In both cases, the majority of the class got them right. Thank goodness. There is always a slight tension when I reveal poll results – if the majority of the class have gone wrong, that would throw a spanner in the works.