The term Bayesian derives from Thomas Bayes (1702–1761), who proved a special case of what is now called Bayes' theorem in a paper titled "An Essay Towards Solving a Problem in the Doctrine of Chances".
Did the devil know about modern probability theory before we did?
Bayesian probability is just a mathematical description of optimal learning process from data, e.g. common sense. It is already built into every living thing[1], because it is the best way to respond to your environment.
