I came upstairs to go to bed almost an hour ago and got sucked into Twitter. Dan Meyer posted an interesting question about grocery store lines - Which line would you choose? A line with one cart (of 19 items) or a line with four carts (of 1, 2, 3, or 5 items)? It was cool to see the responses coming in!
Just ran across this joke on twitter user treed's blog. Would be a funny one to show when we talk about interest!