Ciro Santilli does not believe in free will of course because he is an agnostic and he believes that brains are controlled by the laws of physics, see also: physics and the illusion of life.
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Free will is the concept that individuals have the ability to make choices and decisions independently, without being determined by prior causes or external influences. It suggests that people can exercise control over their actions and are responsible for the consequences of those actions. Philosophically, free will has been a topic of debate for centuries and is often contrasted with determinism, the idea that all events, including human actions, are determined by preceding events according to the laws of nature.