Interesting read on teaching knowledge, a skill in short supply.I discovered a very strange phenomenon: I could ask a question, which the students would answer immediately. But the next time I would ask the question – the same subject, and the same question, as far as I could tell – they couldn’t answer it at all! I have felt for a long time that the education system is a disaster. We teach so people can be successful is school, not in application of knowledge. This places most of the value on memorization schemes, a very brute force approach.