An AI tutor that passes the Turing Test and communicates via speech is roughly comparable to an anonymous human teacher teaching via Zoom. There's no physicality and no continuity to the relationship.
To use an example: my high school history teacher was an old ex-Marine with a buzz cut and big square glasses. I enjoyed his class because he was a cool guy who seemed to have seen the world, and I was interested in what he had to say about wars and historical events.
With an AI, no matter how realistic it is, there is zero of this context. Sure, it can pretend to be a grizzled ex-marine. But who cares what it thinks? A teenager is going to find it lame and boring, not equivalent to an interesting individual tutor.
So it requires embodiment? Rodney Brooks might agree. You're saying it like it can't be done, but I'm hearing it just requires hardware.
> no continuity
Feels like a very tractable software problem.