You might have read all of the math for the defense cap in City of Heroes or the diminishing returns mechanic in Star Trek Online, but you might not have understood the numbers being flung around. Or perhaps it's something even simpler, like the very concept of the soft cap for Hit in World of Warcraft. Not for lack of trying, your brain just won't process it. So what still doesn't make sense to you despite your best efforts? Is it a small aspect of gameplay or something you urgently feel the need to get right? Has it made a major impact on your playstyle?