Yes, all very interesting. But has anyone devised a way of testing 'string theory?' Or is it one of those fascinating and, even elegant, speculations destined to go unresolved forever? While this theory is quite stimulating, it is, by it's own nature, impossible to observe and, thus, to prove.
Plenty more topics where this came from. ;') No way to test it.
http://www.freerepublic.com/focus/keyword?k=stringtheory