Can someone explain CP violation. Under this title how would we approach a supersymmetrical universe? Since I am exempt from contributing to the Ekroptic thread just replyed to by URS, I have to place this question here. From a comsological standpoint the issue has been raised in the brane scenarios, so at a fundamental level how would we speak to issue of the gravitons that has left the brane? The bulk is teaming with gravitons and we now have this question of describing the interaction of those colliding branes? From this I am speaking then to the geometry of quantum gravity. Any thought or opinion here that might help elucidate the world of those colliding branes?