Why writing by hand beats typing for thinking and learning
npr.org
npr.org
Fortunately, all I actually needed to do in class is to figure out what he got wrong so I could give the "correct" answers on tests.
(To illustrate how far out of it he was--this was a 400 level class. The first class period someone he had confused asked a question that anyone who had met the prerequisites should trivially be able to answer. Instead, he rambled back to what he had been saying. Repeat. The third time someone else answered.)
I recommend writing notes about what you read on HN, it should help your memory :)