2) Completely unrelated hypothetical situation:
You have a piece of jewelry that you absolutely love. It's not uber-expensive (figure about $20), it's not an heirloom, and there's very little sentimental value attached to it, you just like it. It looks cool, it feels right, you're used to it, whatever. One day you lose it. A few days later you find it on the sidewalk. Do you pick it up again or just go buy a new one? Does the type of jewelry make a difference? Anything else that you would take into account (like weather, traffic, etc) when deciding whether or not to pick it up?