We are describing what contingent things are doing not why there are contingent things in the first place. This does not get us to a description being the necessary entity.
That this line of discourse doesn't prove that it is the case isn't the same thing as therefore being a demonstration that this definitively isn't the case. Saying that bees look black and yellow isn't proof that they're insects, but the fact it isn't proof they are obviously isn't strong evidence, let alone proof, that they aren't.
The laws of nature. To satisfy the requirements have to exist independently from contingent things, not just describe contingent things
And describing their effects on the physical universe doesn't nothing to to say whether they exist independently of those physical things or are a manifestation of those physical things - they may be either.
I disagree. Contingency points to a necessary entity.
How? How does '1 because 2' and '2 because 3' intrinsically lead to 'therefore x is independent'?
Contingency without necessity is absurdity.
Necessity is also absurdity - this exists, without basis is counter to any sort of understanding we have of anything. It turns out, when considering possibilities this far outside of the circumstances for which our brains have evolved to fathom, our sense of personal incredulity is not a good guide.
There is no good reason not to conclude it. Indeed opponents of it not only suspend the principle of sufficient reason at this point but actively seek to to overturn the principle of sufficient reason...often trying to use the principle of sufficient reason to disprove itself.
The Principle of Sufficient Reason, succinctly, is that everything must have a reason, cause or ground.
Source. Your suggestion of an 'uncaused cause' is the most explicity breach of that notion possible - a definitively uncaused event. The Principle of Sufficient Reason, if universally applied, inevitably leads to an infinite chain of events, whether a closed loop or eternal in scope. To arbitrarily impose 'a start point' and then cite the Principle of Sufficient Reason as somehow the basis of that is just unfathomable.
O.