Double-a Gravity makes things round,and a curve is a part of
round.Gravity is created by curve space,so again its going round and
round ( like a dog catching its own tail.) This is reality. This means
no straight rulers to be found. Spin is curved motion. Curved motion has
a constant gravity force(inertia) and inertia and gravity are the same
thing. It all fits with curve It all fits with spin. Bert