Last Thursday (April 18th) was “National Ask an Atheist Day.”  I did not know that was a thing until I ended up getting sucked into a Facebook conversation started by an atheist friend of mine who was soliciting questions. Most of the questions were some version of “how can you prove that there is no god?”  I was reminded that the way most people define atheism is wildly different than the way that I define it.  I know that language evolves and words come to stand for something far beyond their original definitions.  That is a natural phenomenon of language.  But the words “atheist” and “agnostic” do have simple meanings,…