It is difficult to make good scalable use of a CPU like you can of a graphics card. You certainly don't want 'better or worse' physics or AI in your game
![It is difficult to make good scalable use of a CPU like you can of a graphics card. You certainly don't want 'better or worse' physics or AI in your game](http://cdn.quoteddaily.com/images/john-carmack/it-is-difficult-to-make-good-scalable-use-of-a-cpu-like-you-can-of-a-graphics-card-you-certainly.jpg)
It is difficult to make good scalable use of a CPU like you can of a graphics card. You certainly don't want 'better or worse' physics or AI in your game