pipe. and there was also a bucket of water in the room, well eventually given the six, eight, 10 people whatever, somebody get the the idea, "well yeah, what we do is we pour the water down the pipe to float the ball up" which they did. so they would find that. however, in other words almost always somebody eventually figured it out.
but now when they put the water in with ice, they put ice in the water and a big pitcher with glasses for everybody for drinking water, nobody, nobody got it. very dramatic because in other words the water in a bucket was something that you could use 