Someone asked "Is there a limit to the amount of energy that can be in one place at one time?" a couple days ago on /r/askscience, and RobotRollCall popped up with this response. It's not unusually lucid for him, poke around, there's more gems. I don't know enough physics to judge the accuracy, but my bs meter isn't just not going off, it's looking at me with this "this one's a keeper" look on its face.