Perhaps I should have been clearer on this: my example wasn't meant to imply that the authors of the study were lying. All I meant was that for some abstract pr

Perhaps I should have been clearer on this: my example wasn't meant to imply that the authors of the study were lying. All I meant was that for some abstract proposition A, evidence of a benefit B gained from believing A is not evidence of A. The gym class is a case of B where A is false.