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Well, it is but ... if only we had solid definition of what 'artificial intelligence' is [1] AI nowadays is almost synonymous with ML/NNs. Which is probabilistic / statistical approach. Tau isn't. It is logic. [2] As Ohad mentioned few times, forgot who was the original author, ''AI is what machines can not do yet'', which is the best definition I've ever heard. :) [3] Artificial? WE, humans are all AIs, produced by society. Cf.: feral children. [4] As described Tau definitely automates certain functions which are human-hard... [5] In my understanding Tau is much wider scope than creation of computer which to mimic human on satisfactory level - much more than cybernetic homunculus. :) See Ref.[3] to this post. etc. etc.