Another KA analogy.

Some things can be automated. Brick-laying can be made far easier using one of these very cool machines but it still takes a human to lay things out in the required pattern. Education is far harder. Automatic education won't work all by itself, no matter how much the knuckleheads want Khan Academy to be that way. Khan Academy, like the Tiger-Stone bricklayer, makes things easier in some ways but you still need more ... a teacher. Salman Khan and his "off-the-cuff" videos aren't the devil ... but they aren't an education, either.