Hamish - fair point, but I meant that since the body would have to be acting outside of the normal laws of science to begin with, how can we assume that any of them are applicable. Perhaps the body phases itself with the molecules in the walls, aligning the gaps so it could pass though. I *was* be silly. No offence to timidwiner, but I love answering facetious questions as though they're serious. Much funnier than the original hack comedy email questions are in the first place, IMO.