> You do realize math can handle units of measurements/dimensions just fine, do you? Yes that's exactly what I'm talking about. Kelvin don't support the additi

> You do realize math can handle units of measurements/dimensions just fine, do you? Yes that's exactly what I'm talking about. Kelvin don't support the addition operator. You can pretend it's not Kelvin/Celsius, do something with the number, and add back the unit if you like, but it won't have any physical meaning. > Yes, average temperature does have unambiguous meaning: https://en.wikipedia.org/wiki/Boltzmann_constant https://en.wikipedia.org/wiki/Boltzmann_constant ... in an ideal gas model you can have a meaning adding and averaging k*T with k a magical constant that transforms your intensive property into extensive (energy) > You can add speeds by their very definition Definition of time derivation of the position function ? Yeah well [length]/[time] don't add up that's it. You need to first give a meaning to the addition operator of [length]/[time]. I'm talking in one dimension, of course if you can prove this then going 2D or 3D is easy