> i.e. we've been educating people for 1,000s of years even without textbooks.

And we've been doing a pretty crappy job educating people without written texts. The written word led to a tremendous acceleration of knowledge transmission. The printing press enabled that transmission at a larger, but unified, scale.

Anything we even remotely recognize as science has only ever been practiced by literate cultures.

Discarding technology for education because it's not a panacea is an absolute failure as educator.