| Reply coming tomorrow. The reply might be a long one. So, brace yourself.
The answer might be the same as a murder investigation: motive, opportunity, and the means.
__________________ Time independence: [∂E(g)]²=[∂F(a)×∂r(a)]·[∂F(b)×∂r(b)] and Mass independence: ¶a(t)·¶r(t)=c² |