For simplisticy we are just going to define free will as internal indeterminism for some entity. An entity has free will then it's actions are not fully determined by outside inputs. Quantum mechanics seems to work in such an indeterminate manner.
https://en.wikipedia.org/wiki/Bell's_theorem
For a decision to be freely made the output of the decision cannot be pre-determined, it cannot be like a computer where there is only 1 possible output for each input (ignoring the possibility of errors).
So a decision that is made freely will be a random decision (the decision itself is random, not merely caused by randomness).
If our consciousness itself is quantum mechanical we will have conscious free will since our conscious decisions themselves would be truly random to a degree, not just influenced by random processes outside of your consciousness.
Consciousness as an emergent property from classical computations would not allow for conscious free will and would also make it possible to copy the consciousness or uploading it into a powerful enough computer. Even in that case however actual decisions by humans would still have a degree of unpredictability since the classical computations would be potentially impacted by quantum events.
If our universe itself is deterministic then there wouldn't be any free will at all since the future (including all our decisions) would already exist and there would only be an illusion of choice and randomness.
While the outcome cannot be known some outcomes/decisions will still be far more likely than others, you could theoretically calculate these probabilities but you would never be able to always correctly guess what decision someone would make.
Decision A: 90%
Decision B: 8%
Decision C: 0.2%
Decision D: 1.8%
The probability for you making a decision will depend on various factors such as your genetics and your recent experience. This model of human decision-making allows us to tackle some philosophical riddles such as the newcomb problem.
In a lot of situations (such as poker) being a bit unpredictable is actually preferable over always doing the same thing in the same situation. Thus free will may not actually be an evolutionary liability.
https://en.wikipedia.org/wiki/Bell's_theorem
For a decision to be freely made the output of the decision cannot be pre-determined, it cannot be like a computer where there is only 1 possible output for each input (ignoring the possibility of errors).
So a decision that is made freely will be a random decision (the decision itself is random, not merely caused by randomness).
If our consciousness itself is quantum mechanical we will have conscious free will since our conscious decisions themselves would be truly random to a degree, not just influenced by random processes outside of your consciousness.
Consciousness as an emergent property from classical computations would not allow for conscious free will and would also make it possible to copy the consciousness or uploading it into a powerful enough computer. Even in that case however actual decisions by humans would still have a degree of unpredictability since the classical computations would be potentially impacted by quantum events.
If our universe itself is deterministic then there wouldn't be any free will at all since the future (including all our decisions) would already exist and there would only be an illusion of choice and randomness.
While the outcome cannot be known some outcomes/decisions will still be far more likely than others, you could theoretically calculate these probabilities but you would never be able to always correctly guess what decision someone would make.
Decision A: 90%
Decision B: 8%
Decision C: 0.2%
Decision D: 1.8%
The probability for you making a decision will depend on various factors such as your genetics and your recent experience. This model of human decision-making allows us to tackle some philosophical riddles such as the newcomb problem.
In a lot of situations (such as poker) being a bit unpredictable is actually preferable over always doing the same thing in the same situation. Thus free will may not actually be an evolutionary liability.