I do not believe in free will. However, I do not think our models of the universe are very complete, so I do not think there's a logical basis for dismissing the possibility of free will.

I don't want to make this about my credentials, I was only mentioning my scientific background to help relate my epistemological framework, not to claim any authority. Furthermore, I like to come to r/philosophy to discuss ideas, and it's unfortunate to see that so many debates veer into various logical fallacies, like ad hominem, straw man, argument from authority, etc. So I think it's very important that neither of us do that, which is why I don't want to claim authority, nor assume you are attacking my credentials. But if it helps to understand my state of mind, I will share that I'm an academic biologist, with expertise in molecular biology, biophysics, cell biology, analytical geometry, optics/microscopy, bacterial pathogenesis, evolution, and genetics.

Obviously, it's not the same field as we are discussing (although, really, there is no one field that encompasses all of the science we are discussing, unless we remain so hopelessly broad as to say something like "theoretical physics"), but biology and physics use the same toolset in terms of building and assessing models. Good scientists are skeptics, and it's important to have some sense of what we are reasonably sure is true, what we are reasonably sure is untrue, and everything else. To quote the statistician George Box, "all models are wrong, but some are useful."

To me, as a scientist... I think it's more fair to say that free will is not predicted or explained by any of our models than to say that our models eliminate the possibility of free will. Hopefully, our models are getting better all of the time, and we can approach but never achieve certainty. Most people want certainty, but there is none, only degrees of uncertainty. So, I am arguing from a place of skepticism.

Since it seems to be getting lost somehow, I will repeat for the fourth time that I do not believe in free will. However, all epistemological frameworks that I am aware of require accepting certain axioms. For example, "I think therefore I am," or "A = A," or "existence exists." How do we decide if something is self-evident?