[darkxanthos]

An author of a book is still a teacher... we’re just debating the personalization of the teaching at this point.

[TheTrotters]

But then this recommendation becomes vacuous. No one is recommending learning math by deriving everything yourself.

[darkxanthos]

Exactly. What’s really being referred to? Lower cost and more scheduling flexibility perhaps?

[threatofrain]

Maybe, but I think people do mean a literal human, and I do think books were always available, and if that alone were the key... then I hesitatingly make the simple argument that it would've already been done. One might make a similar argument about why Khan Academy isn't a blowout success in the US.