[Alan Turing]

When you state something as a matter of fact, such as "the world is a collection sum of the people in it", you are not dealing with probabilities.

While Bayesian probability is fairly elementary statistics, and taught in any introductory course to statistics, it is not a belief that you can agree with or not. It is a well established mathematical theorem in statistics and easily derived in logic.

So everyone is a Bayesian thinker here, whether they call themselves that or not.

But whether the world is a place of magical faeries, pixie dust, and sucky people is a very different issue. My observations are that it is not.