> considering Bayes' theorem to be part of AI makes just about as much sense as considering addition in the same light, if "expert systems" had been the first context in which you had ever seen numbers being summed. In the '80s, when at IBM Research we developed the first large-vocabulary real-time dictation taking systems, I remember continuous attacks coming from the Artificial Intelligentsia due to the fact that we were using NO "AI" techniques -- rather, stuff named after Bayes, Markov and Viterbi, all dead white mathematicians (it sure didn't help that our languages were PL/I, Rexx, Fortran, and the like -- no, particularly, that our system _worked_, the most unforgivable of sins:-). I recall T-shirts boldly emblazoned with "P(A|B) = P(B|A) P(A) / P(B)" worn at computational linguistics conferences as a deliberately inflammatory gesture, too:-).
So we have an algorithm which wasn't considered part of AI by the then-AI practitioners, because it didn't aim for semantic understanding, become part of an expanded definition of AI.