Does a Paradox Prove or Disprove the Existence of Free Will?

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In summary, the conversation discusses Newcomb's paradox, a game theory thought experiment that presents a dilemma for decision-making. The paradox only exists if one assumes the existence of free will, and it questions the idea of being able to predict the future with 100% accuracy. Ultimately, the decision on what to choose depends on one's belief in the premise of the predictor's abilities. The conversation concludes that the paradox does not necessarily disprove free will, but rather leaves it up to individual interpretation.
  • #1
michael879
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I heard this paradox a while ago that is only a paradox if there is free will. Ill write it once I can find the exact details later.

Does a paradox that only exists if there's freewill count as a proof against free will?
 
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  • #2
Depends on the paradox and its validity. If it is valid and true then it would logically prove free will untrue and/or invalid.
 
  • #3
its called newcomb's paradox:

Its a game theory thought experiment in which there are 2 players. One player predicts the choice that you will make between either choosing box B or choosing both A and B. He can predict with 100% accuracy. There is $100 in A no matter what the prediction is but if the prediction is that you will choose just B, he puts $1000 in B. You then make your choice and keep whatever is under the box(es) you chose.

If he predicts B and you choose B you get $1000. If you choose A and B you get $1100. If he predicts A and B and you choose B you get nothing. If you choose A and B you get $100. The question is, after he has made his prediction, what should you choose?

One argument is that choosing A and B will always get you $100 more than just B. However the other argument is that if you choose A and B, he would have predicted you choosing A and B and you will only get $100. If you choose just B he will have predicted it and you will get $1000. Both of these arguments make sense. Also, this paradox exists as long as the predictor can predict with 55% accuracy or greater. This makes it more than a thought experiment since it would be easy to make a real experiment out of it.

This only seems to be a paradox however under the assumption of freewill. Watching someone else play the game, you will see them make whatever decision that predictor has predicted. They will either end up with $1000 or $100. The paradox only really exists when you put yourself in the game and can't imagine not having freewill yourself.
 
  • #4
michael879 said:
its called newcomb's paradox:

Its a game theory thought experiment in which there are 2 players. One player predicts the choice that you will make between either choosing box B or choosing both A and B. He can predict with 100% accuracy. There is $100 in A no matter what the prediction is but if the prediction is that you will choose just B, he puts $1000 in B. You then make your choice and keep whatever is under the box(es) you chose.

If he predicts B and you choose B you get $1000. If you choose A and B you get $1100. If he predicts A and B and you choose B you get nothing. If you choose A and B you get $100. The question is, after he has made his prediction, what should you choose?
I don't see it as a paradox - it's simply a dilemma.

"What you should choose" depends on whether you believe the premise that the predictor can accurately see the future (and is not simply making lucky guesses).

If this premise is true, then what is in box B is determined by your choice, hence you would be foolish to take both boxes (because by definition box B will be empty if you take both boxes, and you will get just the $100 in box A).

However if the predictor is simply making lucky guesses (and he cannot in fact see the future), then what is in box B is what it is and is NOT determined by your choice, and you would be foolish to NOT take both boxes (because no matter what he has put in box B, you will always get $100 extra if you take box A as well).

Thus, it's up to you - do you believe the predictor is genuine, or not?

I don't see that this has anything to do with free will - there is no inconsistency in the notion that we choose according to free will, but at the same time someone is able to know what we will choose.

Best Regards
 
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  • #5
michael879 said:
I heard this paradox a while ago that is only a paradox if there is free will. Ill write it once I can find the exact details later.

Does a paradox that only exists if there's freewill count as a proof against free will?
If the paradox which can exist only if there is freewill, then the fact that it exist proves freewill!
 

1. What is the scientific evidence against the concept of freewill?

The scientific evidence against freewill is based on numerous studies and experiments in neuroscience, psychology, and philosophy. These studies have consistently shown that our thoughts, decisions, and actions are largely influenced by external factors such as genetics, environment, and past experiences, rather than a conscious and autonomous choice. Additionally, studies have also shown that our brains make decisions and initiate actions before we are consciously aware of them, further challenging the idea of freewill.

2. Can freewill coexist with determinism?

Determinism, the idea that all events are predetermined by past events and natural laws, is incompatible with the concept of freewill. If everything is predetermined, then our thoughts and actions are also predetermined, leaving no room for true freewill. Some philosophers argue for the possibility of compatibilism, which suggests that freewill and determinism can coexist if we redefine our understanding of freewill to align with deterministic principles.

3. Is there a difference between freewill and the illusion of freewill?

Some argue that even if our actions are determined by external factors, we still experience the feeling of making a choice and having control over our actions. This illusion of freewill can be attributed to our limited understanding of the complexities of our brain and the environment. However, from a scientific perspective, it is important to distinguish between the concept of freewill and the perception of freewill, as the latter may not have any basis in reality.

4. How does the idea of freewill impact society and the legal system?

The concept of freewill has significant implications on moral responsibility and accountability in society. If our actions are determined by external factors, then the idea of holding individuals accountable for their actions becomes questionable. This has led to debates in the legal system about the role of freewill in determining criminal responsibility and punishment.

5. Can we ever truly prove or disprove the existence of freewill?

This is a philosophical and scientific question that has been debated for centuries. While there is a growing body of evidence challenging the concept of freewill, it is difficult to definitively prove or disprove its existence. Our understanding of the complexities of the brain and human behavior is constantly evolving, and it is possible that future research may provide new insights on the concept of freewill.

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