That's pretty ironic, Ed.I'm waiting for you to tell the truth first.Ready to concede?Perpetual Commotion.Sure there is proof the universe began as a closed system. Friedman's solutions to Einstein's field equations, red shift and cosmic background radiation all tell us that approximately 14 billion years ago all matter and energy occupied the space of 1 billionth of 1 trillionth the size of a single atom. The curvature of space time tells us the universe is a closed system. So if all matter started from such a tiny space and then expanded and then bounced back or crunched back that too would support a closed system. And as such could not have been an infinite process. So therefore, the fate of the universe is thermal equilibrium. What exactly do you believe the fate of the universe is?There is no proof the universe is either a closed or isolated system, they are just ASSUMPTIONS. In the visible universe we can measure matter at the outer edges of the universe ACCELERATING away from us. Some FORCE is doing the WORK if the acceleration. Therefore MEASUREMENTS do NOT support the assumption of a closed or isolated universe.Are you assuming that energy is being added to the universe? Or is it that you are assuming the universe is an open system? I don't know anyone who assumes that.
Ready to concede?