Free will is an outcome of a universe which is not purely deterministic if you have a proof that the universe is then essentially there is no freewill.
Freewill goes beyond the concept of your brain deciding what to have for dinner.
People are actually analogous to some physical system it's much harder to predict the actions of an individual whilst predicting group actions on a larger scale is easier since the various individual inputs are effectively canceled out.
This is like modeling say a glass of water, modeling each individual molecule is nearly impossible because you get to the point of not being able to measure them especially when you trying to measure or predict the sub atomic make up of each molecule, but modeling the entire system is easy.
Freewill goes beyond the concept of your brain deciding what to have for dinner.
People are actually analogous to some physical system it's much harder to predict the actions of an individual whilst predicting group actions on a larger scale is easier since the various individual inputs are effectively canceled out.
This is like modeling say a glass of water, modeling each individual molecule is nearly impossible because you get to the point of not being able to measure them especially when you trying to measure or predict the sub atomic make up of each molecule, but modeling the entire system is easy.