We've never had the entire world on fiat currency, but i'm sure it will end just like they think "because this time isn't different."

I follow Dave Collum who is a curmudgeonly silver bug (who is an organic chemist) who says stocks are overvalued and they HAVE to regress to the mean for PE ratios. This logic makes no sense to me, especially from a data scientist. His sample size is what, 100 years old, during which the world was on 3 different monetary standards. And we're currently in a total fiat system.

I prefer Bitcoin to stocks for obvious reasons but the way doomers back their logic into preconceived ideas annoys me.