[bertr4nd]

Possibly the concern with sharing answers is that students could memorize the form of likely exam questions without deeply understanding the material? But that risk exists simply by sharing the questions so I’m not sure I find that argument persuasive.

I’ve always been rather disappointed by the lack of solutions in math books. I mean, on the one hand, it’s a great feeling to crack a difficult problem unaided, and there’s something to be said for building the intellectual discipline one needs to attack a problem with no easy answer.

But also, there are some problems that I never manage to solve because I “time out,” and it’s possible that as a result I’ve missed the opportunity to learn techniques that will be useful in the future.