Here's another installment of rationality quotes. The usual rules apply:
- Please post all quotes separately, so that they can be upvoted or downvoted separately. (If they are strongly related, reply to your own comments. If strongly ordered, then go ahead and post them together.)
- Do not quote yourself.
- Do not quote from Less Wrong itself, Overcoming Bias, or HPMoR.
- No more than 5 quotes per person per monthly thread, please.
Which vicennial cycles of academic consensus have you found most noticeable?
Well, the standard example is nutrition advice. Other reasonably well-known examples include whether post-menopausal women should take estrogen supplements, and how dangerous marijuana is. An example with a longer period is the whole issue with eugenics.