Elfist

Consider: If another, more rationalistic elfist were to specify an empirical method whereby we could detect his elusive critters, then it would at least be possible (if this method were to fail) to weaken the case for elfism.

If you are an elfist, one who believes in elves, you have to show me that they exist. The burden of proof lies on the one who makes the positive claim.

Nope - Someone telling me about his or her deity/ies does not make me a theist - it does not convince me. For someone to become a theist, they will have to become convinced that there is a deity - If I informed you about the tiny, little elf in my closet - would that make you an elfist? Hopefully you'd still lack elfism despite my "informing" you.