I highly doubt anyone starts with "oh hay, I want to use sun.misc.Unsafe". More like "hmm, I think I need to use sun.misc.Unsafe, but I'm not sure if that's the right call. Since this is an uncommon API, it's going to take a bunch of research, which will be a waste of time if I don't need to use it. Let me look up the common applications and see if they pattern-match with the stuff I'm trying to do."