(January 11, 2019 at 9:29 pm)Angelina Wrote:
(January 11, 2019 at 8:05 pm)polymath257 Wrote: Knowledge isn't required. Stars are formed all the time without any knowledge input from anyone.That is a straight up guess and not proven in any way.
(January 11, 2019 at 8:05 pm)polymath257 Wrote: All that is required is the action of the physical laws. As for 'power', that term is rather ambiguous in this context, but again, the physical laws are what mediate the formation of things.
But, and this is crucial, the known physical laws *do* allow for a 'universe from nothing', in part because the the total energy balance of the universe is zero (the gravitational energy is negative and exactly balances the energy from other sources).
Physical laws that came to be how? A universe from nothing is an unproven guess with nothing to substantiate it.
No, it is NOT a guess how stars come into existence. We can see the process happening right now in several nebula. The main thing that is required is gravity.
The most basic laws *cannot* have a cause. Why not? Because any cause would be from a deeper law, so the law in question wouldn't be basic.
Yes, the universe from nothing is a *conjecture*. But it is a conjecture based on the known physical laws. Such is *allowed*, but not guaranteed.
On the other hand, in essentially every model, there is something physical whenever there is time.
My personal default is that the physical universe including all of spacetime simply exists. because time and causality are part of the universe, it is simply maningless to talk about a cause of the universe.
