Ok, though I think we’ll struggle to generate actual numerical probabilities for this conversation. At most a Bayesian approach might yield a principle that the more factors we consider in creating an object, the less likely it is we can identify any specific being as the creator.
I said 'Bayesian-style' because I didn't want to suggest a numerical approach, but an approximation of updating one's priors on the estimated likelihood of the hypothesis given the new evidence.
That makes the comment of
@essentialsaltes all the more important- that we be able to identify requirements of creating an object. Doing that would help reduce the possibilities of who (or what) created.
OK.
Backing up a bit to the point about how reproducing results establishes a possibility for creating.. what about other things? Does understanding how something is made establish the possibility of creating even if we don’t yet have the ability? Does identifying something (articulating it’s characteristics) establish a possibility? Even if we can’t give those things specific probabilities, can we order them?
Understanding the nature of something (its structure, composition, etc.) and its context, allows one to hypothesise how it came to be - this is a large part of scientific discovery; we have well-tested explanation for how many things in the universe came to be, reasonable approximations for many other things, and various untested or poorly tested hypotheses for many other things.
So we know, for example, what is necessary to create a star, a planet, a black hole, a mountain, a tree, a pebble, etc., but this is all in the context of an overarching theory of of the universe - as Carl Sagan said, "
In order to make an apple pie from scratch, you must first invent the universe".
We know how these things are actually made, given a particular starting context - a star needs a vast cloud of hydrogen, a mountain needs tectonic plate(s) which need a certain kind of planet, and so-on. In principle, given a detailed specification, they could all be constructed from scratch from a big repository containing all the necessary atoms, but where would that come from? Do we need to create the atoms?
There are an infinite number of ways of skinning this cat, and for the vast majority, we can only speculate how they could be done... Ideas like the
Kardashev scale attempt to order the different capabilities of hypothetical civilizations in terms of the energy at their disposal, but it's speculative stuff.