The freedom paradox

The primary aim of science is to ascertain causal links. So that if a snooker ball hits another snooker ball on the felt of pool table under normal coastal gravitational conditions at a specific angle with a specific spin on the balls the two balls will be caused to deflect in specific predictable ways.
Social and clinical sciences are different as the number of variable involved are astronomically larger however we generally agree that all behaviours and clinical outcome are caused. Ironically we also believing we are free to behave in any way we choose.
These two ideas are contradictory.
We are either free or we are caused? We can’t be both.
And this is the next great paradox.
The second paradox, the paradox of freedom – we are free to do what we choose but having done so we can describe the thoughts that determined that choice