%0 Journal Article %T Even the Minkowski space is holed %A S. Krasnikov %J Mathematics %D 2009 %I arXiv %R 10.1103/PhysRevD.79.124041 %X To cure the lack of predictive power of general relativity Geroch proposed to complete the theory with an additional postulate that only "hole-free" spacetimes are permitted. I argue that this postulate is too strong -- it prohibits even the Minkowski space. %U http://arxiv.org/abs/0903.3991v2