> c^2 is a big number.

Famous tweet about conversations with God.

[1] - https://x.com/WraithLaFrentz/status/1981404849305686219

indeed, but note that c^2 is just a factor to convert between units here and is completely arbitrary (or rather, c is so high because our units are human scale)

indeed, in the most natural systems of units in this area, we set c = 1 as to simplify the equations

https://en.wikipedia.org/wiki/Natural_units

https://en.wikipedia.org/wiki/Geometrized_unit_system