Celsius may not be as Scientific as Absolute Zero made by the Kelvin guy, but at least it follows the same convention, it only drift the 0 from being the absolute from the freezing point of water on earth atmosphere since we live on earth and we are made out of water.
Since 2023 burgers define their own piss and drunk units of ((freedom)) by the metric system
https://en.wikipedia.org/wiki/United_States_customary_units