It’s easy to get swept up in the hype about artificial intelligence tutors. But the evidence so far suggests caution. Some studies have found that chatbot tutors can backfire because students lean on ...

Update 11/12: The price on the 4K edition just dropped to $59.30 at Amazon (down from $100). I've been covering 4K releases for a long time, and I can assure you, preorder price drops do not always ...