I questioned the commitment of your friend because she made a claim which I know with metaphysical certainty to be false.
I found much of the rhetorical interchanges interesting until the word metaphysical slipped through JJ's Freudian wormhole. I almost dropped my popcorn. I've been awaiting a response to the challenge of the gauntlet thrown down earlier by Some Help. (She should have proclaimed a double-dog dare.) If the study of metaphysics lends itself to certainty, then perhaps you really can save 15% by switching to Geico.