Quote Originally Posted by Illusions View Post
Just a thought, but what is your plan for describing a meter, to say...Aliens, who have no idea of how long it takes the Earth to make one complete revolution about its axis, or how long it takes the Earth to make a complete revolution around the sun, or that we decided to subdivide these units into common multiples of 2, 6, 12, and 15? It seems meter and feet are both completely worthless, and non-universal here.
It's easy to describe a meter to aliens. Since it's based on a universal constant. You also don't use stuff like "revolutions of the Earth" since those are not constants.

Aliens which actually managed to travel here will most certainly also use universal constants as their zero-points.