Bad Romance is a single.
In philosophical logic , the concept of an impossible world -LRB- sometimes non-normal world -RRB-. philosophical logic. philosophical logic. logic. logic. is used to model certain. phenomena that can not be adequately handled using ordinary possible worlds .. impossible world , w , is the same sort of thing as a possible world -LRB- whatever that may be -RRB- ,. possible world. possible world. except that it is in some sense `` impossible . ''. Depending on the context ,. this may mean that some contradictions are true at w , that the normal laws of logic or of metaphysics fail to. logic. logic. metaphysics. metaphysics. hold at w , or both .