Okay, so go to office hours or a math center (if available, apparently quite common). I certainly don't want to be misquoted as claiming that mathematics must

Okay, so go to office hours or a math center (if available, apparently quite common). I certainly don't want to be misquoted as claiming that mathematics must be learned in a vacuum. Just that access to a large collection of questions and answers is not helpful. Your own argument goes through just as well to show that access to the answer isn't helpful either: you know you got the wrong answer but you don't know why.