Always.

We're the stupidest and least capable that it's possible to be to develop all this tech in the first place, because if we weren't, we'd have done it sooner.

IIRC it took us until Blaise Pascal or Fermat to realise the probability distribution of flipping two coins isn't 1/3 HH, 1/3 TT, and 1/3 a heads and a tails.

Witch hunts on spectral evidence was a thing.

I've heard 12th century european sailors sometimes thought that compasses were devilish.