We've been arguing about two systems of measurement for an excruciatingly long time now. Phil Jamesson illustrates the salient points. The Celsius crowd thinks that a scale that is based on the states of water is correct. Fahrenheit fans prefer to run zero to 100 between points that people encounter in the real world. The truth of the matter is that both sides understand each other's measurements pretty well, and most countries use both systems depending on what they are measuring. Still, everyone wants to think their system is correct. -via reddit, where the argument continues.