Little Toe,
You think that we can rely on Reality for the evidence?
This presupposes that any one of us on planet earth actually knows what "Reality" is.
Let us represent "Truth and Reality" as an Elephant. Three men who are blind each have a hold of this elephant. One holds on to the tail. One has his hands around the elephant's leg. The third is holding on to the ear.
They are asked to describe this elephant. The first one says "this elephant is thin, round and curly". The second one says "No, this elephant is big and round like a tree". The third one says "No, this elephant is thin, flat and wide." ..........And we petty men prat on about an "Elephant" not one of us has seen.
Here is another analogy about "God", but we can substitute "Reality" for God:
Trying to understand God (Reality) is a bit like an amoeba peering up from the other end of a microscope, trying to understand the sex habits of the scientist.
How then, can we rely on this so-called "reality" for the evidence of whether we have "free will" or not? There is no "reality" which we can claim to comprehend with certainty, accuracy and completeness, and therefore we have but mental models, or "Reality Modalities" to which we individually subscribe. In the end, it really is a matter of faith, whether we like it or not. And so the question of Free Will cannot be resolved by an appeal to "reality.
Rod P.