Some of the boundaries here are blurry and subjective, making it nontrivial to produce neat categories. Personally, I go to the Wikipedia page for any particul

Some of the boundaries here are blurry and subjective, making it nontrivial to produce neat categories. Personally, I go to the Wikipedia page for any particular term and follow the crowd wisdom, plus a grain of salt. ¯\_(ツ)_/¯ Actually, you raise a genuine issue. Terminology isn't clear, and that makes discussion difficult. I believe that the notion of AI was predictive, and emergent, and retro-fitted. It emerged around the 1950s (arguably), gained some degree of formalisation, meanwhile the goalposts shifted and the field diversified, and now the term is applied haphazardly. I think it's now the responsibility of the user of the phrase to define their terms... which probably indicates that it's no longer fit for purpose.