Logical Proof of Spirit Stone Utility

I recently received a necklace as a gift. On it is a simple black stone made of Hermitite. Supposedly, this is a semi-precious spirit stone that grants the wearer confidence and power. As I’m sure you guys know, I’m something of a skeptic when it comes to spiritual issues; so if you think this trinket is just a hunk of rock with no special powers trust me when I say I was right with you. However, in rationalizing the wearing of my new gift I concocted a proof for why this baby works. Tremble before my logic, unbelievers.

1. Some people believe the stone has inherent magical powers to make the wearer more confident and powerful
2. Upon encountering someone wearing the stone, they will believe the wearer to be more confident and powerful
3. Because of their belief (whether it is true or not) they will act as though the wearer of the stone is more confident and powerful in social interactions.
4. Your confidence is based in part on what others think of you.

Conclusion: You are more confident and powerful if you wear the necklace.

I think there is an even simpler proof, but it’s circular.
1. You are as confident as you believe yourself to be
2. You believe wearing the necklace will make you more confident

Conclusion: You are more confident and powerful if you wear the necklace.

Both require an irrational condition – in the first proof someone needs to believe in magic powers, in the other you define confidence to be a snake-eating-its-own-tail kind of quality. I don’t think that’s really a problem though because people aren’t built to be rational, right?

Also, it looks cool, so that helps.