Any evidence for and against free wills existence?
I'm not sure that's what I meant. The universes being identical is key here because the indentical people will make the same choices because they are identical in every way down to every thought. Every contributing factor in choice making will be exactly the same in both of them. Something about these two identical universes would need an external influence to change them.
So say before I asked them all the question I punched one of them in the face. Now that one might answer differently to the others because they are now different.