reducing fear when cycling?

Really? Which bits?

General relativity and quantum mechanics have both had a fair bit of research into them, and there's even the odd bit of theoretical and empirical evidence too.

Risk compensation, on the other hand, not so much.

It seems like an odd comparison to make.

The theory of relativity and quantum physics are disputed, too. :)

By creationists?

I could dig up the data but, meh...