It's pretty bizarre that you're using the derogatory definition of "hack" given that you're posting on Hacker News. And it doesn't incline me to want to talk to you further.
Sorry, I was just using the colloquial meaning of hack. Did not at all mean to appear derogatory for the type of hacking exemplified by HN, of which I take part in.
In any case, I do see your point about similarities between hacking and overlearning, but I think there are some differences. If I can articulate those difference better, I'll reply a little later.
I think overlearning can be considered to be a subset of hacking. In both cases laws (as in physics) are exploited however while hacking may or may not break rules as imposed by society overlearning does not.