Nice writeup!

"After having some first confrontations with steemit’s anti-vaxxers, AIDS and climate change denialists and the like, their common favorite argument is easy to observe: “Correlation is not causality!”

I actually read a comment from a skepticist yesterday saying:

Yes correlation absolutely and positively must imply cause and simply that. Without correlation we have no real reason to invest into discovery.

I was baffled.