1.0 link Rainbow Dash Network http://rainbowdash.net/ aaaaaaaaaa (aaaaaaaaa) http://rainbowdash.net/aaaaaaaaa http://rainbowdash.net/notice/146133 @<span class="vcard"><a href="http://rainbowdash.net/user/1208" class="url"><span class="fn nickname">foxox</span></a></span> This is true. I remember I started really learning the applications of this stuff when we did raycasting in CS class in high school. Funny story about that - In English class, we read that Victorian era people believed that light was cast from one's eyes, instead of reflected off of surfaces. i.e., Victorians believed in raycasting.