One of the unintended side-effects of hosting a party is left-overs. I don’t think that anyone goes on a shopping trip thinking “You know…10 people are attending my shindig on Friday. But I think at least 10 other people overheard me inviting Bob to the party, and even though we were actually in the middle of the grocery store and neither Bob nor I actually know them, they might find out who I am and where I live and come to our little party as well. I’d better buy enough chips to feed twenty people.”
No, more than likely you go to the store thinking, “I’ve only ever seen Bob put away a hamburger or two at any particular social function. But I’m pretty sure he was just being modest and would probably eat three if he could. And Mary? She once told me that she like hotdogs. Which means she’d probably eat a half a pack just by herself. Man, I’d better stock up.”
