Howling:Cracks Causing Paradoxes

So everyone seems to think that the cracks erasing events cause paradoxes (such as the common "if Rory died saving the Doctor but then was erased, who saved the Doctor?" or the "If Rory was absorbed because he was dead, how can be be dead if he never existed?"). But they don't. People are bringing up the "if you change the past it affects the future" argument, but that's only for interfering with events, not removing them completely. The cracks erasing someone do not alter the physical or mental status of the present, unless that event or person was directly part of their past, even then, only affecting their mental status, not their physical one, as shown in Cold Blood. Thoughts? The Thirteenth Doctor 20:34, June 2, 2010 (UTC)