Ben Horowitz says instead of banning AI, educators should set problems students can't solve without it: "I was talking to Dan Boneh, who is a great professor of computer science and cryptography at Stanford. His take on AI was: You have two choices. You can ban it, and by the way, that won't work. Or you can make the problems so hard that you can't solve them without AI." "What he's seeing is, 'I've got students solving things that no student in history could have ever solved.' That's what's…