Yeah, nothing beats good documentation or comments - quite often you find some code that doesn't make any sense but you can see someone made quite an effort to

Yeah, nothing beats good documentation or comments - quite often you find some code that doesn't make any sense but you can see someone made quite an effort to do it in this particular way. You do your best to understand why it was done this way, but if the comments/bug tracker/wiki links/people with the context are not there - you just shrug and move on.