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What's expected of us

nature.com

41–50 of 59 posts

Re: What's expected of us

#41

Reminds me of Comed-Tea in "Harry Potter And The Methods Of Rationality": "If you drink it, something surprising is bound to happen which makes you spill it on yourself or someone else. But it's charmed to vanish just a few seconds later"

Except of course, that was done via a cheap trick with minor prescience: the tea transmits an urge to drink into your mind when it detects that something funny is about to happen.

Re: What's expected of us

#42
What I really hate about these sorts of stories and attending discussions is that we all pretend we know what "free will" is, when no one has ever come up with satisfying definition (just look at the Wikipedia page). My humble opinion: all hand-wringing about lack of free will should be put on hold until we can answer the following question:

In what way will an entity that has free will behave differently than both a fully deterministic entity and an entity that is deterministic excepting occasional random events?

I have yet to see either an answer to that question, or a definition of free will that leads to one. Until then, I consider all speculation and meditation on the "revelation" that we have none to be a tale full of sound and fury, signifying nothing.

Re: What's expected of us

#43
The question of "Do we have free will?" always becomes a lot less confusing if you question the question itself, by asking what you mean by "free will" in the first place. There are some nice posts on Less Wrong that deal with this, they're worth a read if you're curious:

http://wiki.lesswrong.com/wiki/Free_will_(solution)

Re: What's expected of us

#44

Reminds me of Comed-Tea in "Harry Potter And The Methods Of Rationality": "If you drink it, something surprising is bound to happen which makes you spill it on yourself or someone else. But it's charmed to vanish just a few seconds later"

Except of course, that was done via a cheap trick with minor prescience: the tea transmits an urge to drink into your mind when it detects that something funny is about to happen.

You might want to add a spoiler warning to that, as the actual mechanism behind it is not immediately revealed in the story :-)

Still, I don't see why the Predictor couldn't work in the same way - how would you determine that it doesn't?

Re: What's expected of us

#45
Just because you can predict what simple decision I will make before I am aware of it consciously, does not imply I don't have free will. All it says is that my conscious awareness of some other part of my brain making the decision is delayed by x milliseconds i.e. we are not making decisions in the upper layers of consciousness, but below it.

When you think about it, it is what I would expect. Your awareness is the product of nerves firing, so they have to fire before it can be reflected in your consciousness. If you decide to recall some information, the neurons storing that information have to be activated (they have to fire). If you can create a device (and we have) to detect those nerves as they are firing you will know what person is trying to recall before (by some miniscule lead time) they are aware of it.

Re: What's expected of us

#46
post #25

Oh my... another meditation on the issue of free will, and the existential angst we would experience if we learned that our choices are deterministic. Personally, however, I think that the whole question of free-will vs. determinism is a false dilemma. For me, another issue is more important: Determinism vs. randomness. If my choices are not deterministic, they must be random. I would rather be deterministic than ran…

If my choices are not deterministic, they must be random. But this is not what is classically understood by free-will, and I suggest that it is your dilemma which is false. Quoting Aquinas, "Free-will is the cause of its own movement, because by his free-will man moves himself to act." I anticipate that free-will thus understood is likely ruled out a priori by your philosophical disposition. Nonetheless, I think you…

I've just never heard a notion of "free will" that makes enough sense to even ask whether it's true or not. Unless you're talking about some sort of Cartesian duality where there's a nonphysical soul that determines your body's actions - which is at least a coherent idea, but not supported by the evidence.

Re: What's expected of us

#47

Earlier quoted context omitted.

As I see it, if you consider the universe to be a series of states[1], either the next state is perfectly determined by the previous one, or there is a (finite) set of possibilities for the next state. The latter therefore exhibits randomness. I'm happy to be challenged on my philosophical disposition though, because I'm aware that there are whole schools of thought that seem like vague informal nonsense to me, and I…

Indeed, what I am saying is that you can have the deterministic universe, or the random universe, and still have free-will, properly understood. Note that from the outside, free-will is by definition apparently "random". It is a black box not determined by any variables in the greater world. What matters is that the free-will is mine or yours -- that the entity known as to me as myself or to you as yourself should al…

I seem to have misunderstood your post (and possibly conflated it with others). I thought you were arguing that "free will" was a third possibility, distinct from a deterministic or probabilistic universe.

I am entirely happy to accept that free will is compatible with determinism, and it sounds like we have similar views on this issue. Personally I consider ownership of "will" to be a far more important notion than that of some abstract metaphysical "freedom".

Re: What's expected of us

#48

Anyone that liked this should definitely check this one as well by the same author: http://infinityplus.co.uk/stories/under.htm

I highly recommend Ted Chiang. I really enjoyed "Story of your Life" available in this short story collection of the same name: http://www.amazon.com/Stories-Your-Life-Others-Chiang/dp/193... Some of the stuff is a but uneven but he's written some of the most thought-provoking sci-fi I've read in some time.

Can you explain Story of your Life? To me it just doesn't make sense, our consciousnesses don't work like that - which undermines any point it might be making.

Re: What's expected of us

#49

Earlier quoted context omitted.

If my choices are not deterministic, they must be random. But this is not what is classically understood by free-will, and I suggest that it is your dilemma which is false. Quoting Aquinas, "Free-will is the cause of its own movement, because by his free-will man moves himself to act." I anticipate that free-will thus understood is likely ruled out a priori by your philosophical disposition. Nonetheless, I think you…

As I see it, if you consider the universe to be a series of states[1], either the next state is perfectly determined by the previous one, or there is a (finite) set of possibilities for the next state. The latter therefore exhibits randomness. I'm happy to be challenged on my philosophical disposition though, because I'm aware that there are whole schools of thought that seem like vague informal nonsense to me, and I…

On [1], one interpretation of quantum mechanics says that the universe is the evolution of all possible future worlds through branching: http://en.wikipedia.org/wiki/Many-worlds_interpretation

The other major interpretation would be that out of the possible futures one is randomly selected based on its probability. Determinism without branching doesn't seem like an option given the laws of physics, correct me if I'm wrong anyone?

Re: What's expected of us

#50
post #49

Earlier quoted context omitted.

As I see it, if you consider the universe to be a series of states[1], either the next state is perfectly determined by the previous one, or there is a (finite) set of possibilities for the next state. The latter therefore exhibits randomness. I'm happy to be challenged on my philosophical disposition though, because I'm aware that there are whole schools of thought that seem like vague informal nonsense to me, and I…

On [1], one interpretation of quantum mechanics says that the universe is the evolution of all possible future worlds through branching: http://en.wikipedia.org/wiki/Many-worlds_interpretation The other major interpretation would be that out of the possible futures one is randomly selected based on its probability. Determinism without branching doesn't seem like an option given the laws of physics, correct me if I'm…

As I understand it, our current understanding of physics suggests a probabilistic system, but I don't think we know enough to assert that a deterministic model is impossible.

This comment goes into more detail about what we do know: https://news.ycombinator.com/item?id=7069261

Also, if we were being obtuse, we can describe any (finite) probabilistic universe as a deterministic one with enough rules.

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