Metsfanmax wrote:BigBallinStalin wrote:Metsfanmax wrote:
I doubt that we would ever have the computing power necessary to actually carry out the calculation. That is not the point. The point is that it is meaningful to state what the calculation is. Even if we could never actually calculate the state of the universe at t+1 based on complete information at t, it is nevertheless true (as far as we have yet determined) that the state of the universe at t+1 is completely determined by the state of the universe at t. The idea of free will requires this not to be the case. If you are meaningfully going to make a choice, then I contend it should not be possible for an external observer to know in advance what the choice will be. If that choice is completely determined by natural laws, then your mind has not done anything except play out the cosmic drama that unfolds every second in the universe.
RE: underlined,
What do you mean? Because if I knew someone really well and successfully predicted his decision (e.g. I placed a bet and won), it doesn't follow that that someone "didn't meaningfully make a choice." (Stocks and bonds traders are great at doing this for large scales of individuals and organizations). What's the difference between "knowing in advance" and "predicting"? Do you mean: "to know in advance with absolute certainty"?*
Yes, I meant to know in advance with absolute certainty (but see below).
*If absolute certainty is required, then what of the uncertainty principle? ---namely, this part: "For instance, the more precisely the position of some particle is determined, the less precisely its momentum can be known, and vice versa." (wiki)
Quantum mechanics is a deterministic system, even though it results in probabilistic outcomes for measurements. As I said, the point is not whether we could make an accurate prediction of the human's behavior. The point is to distinguish between a system where the human has made a choice, in the sense that the mind has exerted some sort of control over the environment instead of vice versa, and a system where the environment completely determined what the mind thought and did.
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To clarify: an atom is incapable of having free will since its "decisions" are entirely governed by natural laws. You'd agree?
Yes, and since humans are collections of atoms, it's hard for me to avoid the inevitable conclusion that humans do not have free will either.
RE: bold,
Suppose someone discovered that when x-amount of neutrinos pass through the Earth, then people are 50% more likely to desire sex. If this proven to be a fact, then would this fit your criteria of natural laws determining one's choices?
Suppose someone discovered that when x-amount of neutrinos pass through the Earth, then people are 100% more likely to desire sex. If this proven to be a fact, then would this fit your criteria of natural laws determining one's choices?
Your use of the phrase "more likely" is meaningless for this discussion, because it refers to a statistical sample and not an individual. We are discussing the individual when we discuss free will. A better question is, did the neutrinos passing through initiate some nuclear reactions that spawned a chain of events terminating in an increased desire to have sex?
I also don't believe that choice exists, at least in this framework. If the universe is deterministic, natural laws don't determine choices, they just have definite consequences. You're incorrectly describing my argument to even use the word choice, and it's resulting in an incorrect understanding of what I am saying. At the very least, you'd have to clearly define what it means for a human to make a choice.
Metsfanmax wrote:What do you mean by "the form is completely deterministic"? Could you give an example?
Yes. According to Newton's second law, if I place a one kilogram particle on a frictionless surface and exert a force of 1 Newton on it, it will always accelerate by precisely 1 m/s^2(*). There is no element of unpredictability in what the state of the universe will be as a result of the action.
*Ignoring the effects of special relativity, which are not important for the answer.
"No element of unpredictability"....
So, you're looking for some law which completely eliminates any uncertainty* of an outcome?
*uncertainty: "uncertainty is present when the likelihood of future events is indefinite or incalculable."
Or/and are you looking for some law which perfectly defines the risk* of any means to any end?
*risk: "risk is present when future events occur with measurable probability"
I was referring to the former. There is no stochastic element to the equations that we write down that govern the universe (the uncertainty principle, for example, does not affect the determinism of Schrodinger's equation).
Metsfanmax wrote:BBS wrote:I am presented with two options on a broad level at this time: (1) continue reading, or (2) ignore your post. Apparently, I have more than one option. After some time of deliberating between the two choices, I chose (1).
[1]Do you really believe this? In what alternative scenario would you have made a different "choice?" [2]If the thought process that led you to the conclusion was based on some series of weighed pros and cons, those pros and cons were determined completely by your past experiences, and if we re-ran the universe again up to this point, is there any chance you could have made a different decision? If not, in what meaningful way have you actually made a choice?
[1]Given the apparent absence of a framework/model which demonstrates the validity of determinism, substitutes must be found; therefore, yes, I believe that.
It is not obvious to me why a lack of proof for determinism means that you made a choice. There are plenty of ways to construct a non-deterministic universe in which you still had no control over your actions.
[2] Sure. I could've thought of something more interesting to do, which I didn't conceive in the original, universal trial. The opportunity cost would've varied, so based upon its value compared to the perceived profit of reading his post, I may have decided either way. Who knows. Also, I don't constantly weigh pros and cons at every time for every decision, so during the second trial, I could've been entirely capricious.
I like the idea of imagining an ability to re-run the universe to test for this, but how is that practical?
If the determinist position relies on imaginary, universal reruns in order to make its case, then shouldn't it be closeted in the Unfalsifiable section--next to God, Thor, FSM, and Paramatma?
The thought process is the same for believers in free will. In order to argue that free will exists, you must argue that you could have made a different choice than the one you did (i.e., abandon crispybits' post). But why should I lend any credence to that hypothesis? The only evidence we have is what
actually happened, which is that you read the post. In order to convince anyone that the result could have been different, you would need to re-run the universe with the same initial conditions and get a different outcome. That is, the burden of proof is on you. I have one piece of evidence that suggests that you would have made that choice (the evidence being that you
did make that choice) and you have zero pieces of evidence suggesting that it could have happened another way. You can assert that you "could've thought of something more interesting to do," but why should I believe this has a non-zero probability?