> in general, a competent meat teacher is better than a competent silicon one That's true, but it's one that has to be observed modulo the availability of comp

> in general, a competent meat teacher is better than a competent silicon one That's true, but it's one that has to be observed modulo the availability of competent meat teachers (skilled in the relevant subject). These are in short supply, certainly in the developing world -- but even in the schools and universities of the developed world, the availability of teachers in any subject is generally limited to a few hours a day, and for enrolled students only. I think they should be seen a complementary, especially for younger students, but the availability of a competent silicon teacher in any of a wide range of subjects, for anyone, anytime, anywhere is huge.