Is Santa Claus real?  Before you rush to a yes or no, stop for a sec. This question actually has no simple binary answers, because it’s a very ambiguous question.  Santa Claus may not exist in the same way that your friends and families exist. But he surely exists in our collective consciousness. In that sense he’s both real and unreal, depending on how you look at reality, which is itself an ill-defined term. Now,…