“For example, if we ask the question, “What is it to be a Christian?” (or “Who is a Christian?”), we receive various answers depending on who answers the question. In the broadest use of the term “Christian,” it seems that anyone identifying herself as one would count as a Christian. In a more strict sense, anyone adhering to (some of) the central tenets of Christianity (such as creeds, etc.) would likely count as one. Yet, there are plenty of other, even more specific definitions of what it is to be a Christian; these definitions are frequently incompatible with each other, and this provides an incredibly fertile source for instances of the fallacy.”