At the quantum level, there is true randomness. From there comes the understanding that one random fluctuation can change others and affect the future. There is no certainty of the future, our decisions have not been made. We have free will.
That’s merely one interpretation of quantum mechanics. There are others that don’t conclude this (though they come with their own caveats, which haven’t been disproven but they seem unpalatable to most physicists).
Still, the Heisenberg uncertainty principle does claim that even if the universe is predictable, it’s essentially impossible to gather the information to actually predict it.
At the quantum level, there is true randomness. From there comes the understanding that one random fluctuation can change others and affect the future. There is no certainty of the future, our decisions have not been made. We have free will.
That’s merely one interpretation of quantum mechanics. There are others that don’t conclude this (though they come with their own caveats, which haven’t been disproven but they seem unpalatable to most physicists).
Still, the Heisenberg uncertainty principle does claim that even if the universe is predictable, it’s essentially impossible to gather the information to actually predict it.