What's that quote again...? Oh, that's it: "The more you know, the more you know you don't." It feels very appropriate now :)
Cheers Patrick for that great info & to everyone who contacted me off-list also! > A halfway-decent description of the physics of how this is done, is > covered in Neal Stephenson's excellent article on Wired: > http://www.wired.com/wired/archive/4.12/ffglass.html