Okay, okay. Sorry, Ashley. It's just... well, I did have this long and detailed explanation on the implementation and benefits of using surrogate collision detectors, outlining the whys and wherefores thereof, and I... um...
It all boiled down to this one image:
<img src="http://xs223.xs.to/xs223/08036/wtf118.jpg">
*sigh* <img src="{SMILIES_PATH}/icon_sad.gif" alt=":(" title="Sad" />