Let me pose a thought experiment to you: Suppose you are atravelling salesman and you knock on someone's door expecting to sell them woolsocks. This person, upon seeing your socks, joyfully invites you into theirhome and pays you handsomely for the socks. Still, you decide to mix it up alittle bit before next year, so you show up at their door waving cotton socks.They slam the door in your face, claiming they're allergic to cotton. Now, theyear is up, and you have another opportunity to sell them socks. Are you goingto try to sell them wool or cotton?