Content In a certain bar, a glass of beer costs 1 dollar. An infinite number of physicists walk into a bar. The first one orders a beer. The second one, half a beer. The third, a quarter of a beer. The physicists give the barman 2 dollars and leave. Then next day, An infinite number of mathematicians walk into a bar. The first one orders 12 beers. The second one, 24 beers. The third, 36 beers. The mathematicians take 1 dollar from the barman and leave.