Who does science in imperial units?! Thats what crashes stuff and people into hard objects. Well, then again, they use kcal, instead of Joule. Which has conflic

Who does science in imperial units?! Thats what crashes stuff and people into hard objects. Well, then again, they use kcal, instead of Joule. Which has conflicting definitions by a small percentage. And usually, the kilo-part is hidden. Making some calcuations off by a factor of one thousand.