> conventional wisdom doesn't seem to stick

I wouldn’t say cutting out all caffeine is conventional wisdom. Every sleep specialist (sample size of 3) I have spoken to has basically said, while they don't recommend caffeine, if you only drink it early in the day it’s probably fine.

I’m asking a question to determine his view of “conventional wisdom,” which could be all kinds of things. Why would you assume that his view of “conventional wisdom” necessarily includes cutting all caffeine?