Traditionally philosophical literature recognizes a distinction between fatalism and causal determinism. Causal determinists don't say that human actions and thoughts don't or can't affect the future, just that those actions and thoughts are themselves causally dependent on prior conditions and the laws of nature. Fatalism is generally defined as something like "no matter what you think or do the future cannot be altered. It's Oedipus killing his father despite doing everything he can to avoid it.
The psychological and physical answers above sound to me like what it would be like if fatalism were true than if hard determinism were true. I mean, hard determinists think we don't have free will; it would be odd if they thought not having free will involved novel psychological or physical experiences.
Anyway, I think the only kind of free will that makes sense is compatiblist free will. So when it comes to what it would be like not to have free will I'm concerned with what it would be like if my decisions weren't made according to my wishes and reasons.
I would expect to have a very hard time predicting my behavior or explaining it after the fact with any kind of rational model....
It's all about the physical components. Not having free will feels like sleep paralysis; it's a disconnection from your muscles.
Have you ever been playing an immersive video game, for example a story-driven FPS, and become completely used to looking around, moving etc. with the controls; and then hit a point where the developers take that control away to do something narrative? Suddenly your head turns to look at something and you didn't tell it to? The fraction of a second of vertigo and confusion, before you remember you're playing a game? That's no-free-will.
Feeling unable to complete thoughts I would like to think through, as if someone censored them
I can't make sense of this one. How would you even tell? You can't have an endless tower of meta-thoughts monitoring the first thought to see if it halted.
Your question seems ambiguous between these two:
Of course the answer to the first might turn out to be "exactly like we feel now, since in fact we don't have free will" or "exactly like we feel now, since having or not having free will, as such, makes no difference to what it's like to be us".
When I read Eleizer's posts on free will, and then spent time thinking it through myself, I came to the conclusion that the question was (non-obviously) incoherent, and that this is what Eleizer also thinks. More specifically, that when you Taboo free will you find yourself trying to say that your brain is not controlled by physics, rather "you" do, where "you" has to be not physics, which is really just "magic". I started thinking further about questions and realised that there are whole classes of questions for which neithe...
The absence of free will seems like a pretty good description of how I've felt for the past 8 years or so. "And now, I'm going to do X. ... Right? Other half of brain that hears this part giving orders? X? Any day now? You realize that not listening to me means we'll have to put up with getting yelled at by people who will Fundamental Attribution Error us into oblivion, right?" Though maybe Fundamental Attribution Error isn't quite right, since there's a strange enduring "Not much decision-making power" quality rather than the "So ...
Slightly off-topic, but I don't want to start another free-will thread...
Would free-will represent an evolutionary cost?
If free will is to say that your decisions are not driven solely by your stimuli inputs, then it seems to me that a creature with free-will is by definition less responsive to its environment than a creature without it. A creature that is less responsive to its environment should be out-competed by a creature that is more responsive to its environment ceteris parisbus.
Even assuming that free-will is possible, is it likely, or would we expect "free-will" genes to get eliminated from the gene pool?
Hmmm...
I suppose if I had the feeling that I could predict my own actions with certainty - as though I were able to compute my own input-output table - that would be like feeling like I didn't have free will.
I don't like introspecting, in general. It consistently makes me feel bad; my train of thought inevitably turns to the things about me that make me upset. Better to stay distracted and keep my mind on more pleasant things.
Perhaps we should also ask "Why do we feel we have free will?". The simplest answer, of course, is that we actually do. Albeit, it wouldn't be beyond the scope of human biases to believe that we do if we don't. Ultimately, if we were certain that we couldn't feel more like we have free will than we already do, then we could reduce the question "Do we have free will?" to "Would someone without free will feel any differently than we do?".
I really can't imagine any subjective difference between having free will and not having free will. For example, "Observing myself act in ways I never intended to act" seems to be the conception we have of free will from video games/movies/etc. (e.g. in Dragon's Dogma, your pawns can get possessed by a dragon and then they run towards you trying to kill you while telling you that they're not in control of themselves) but I don't think we should generalize from fictional evidence.
"what would it feel like to have/not have free will?"
I imagine the stereotypical idea of hypnosis: the subject finds themselves unable to resist the suggestions implanted by the hypnotist.
I do not know if this phenomenon actually exists.
I suspect that a quick summary of people's viewpoints on free will itself would help in interpreting at least some answers. In my case, I believe that we don't have "free will" in the naive sense that our intuitions tend to imply (the concept is incoherent). However, I do believe that we fell like we have free will for specific reasons, such that I can identify some situations that would make me feel as though I didn't have it. So, not actually having free will doesn't constrain experience, but feeling like I don't does.
Epistemically:
If I discove...
Epistemic:
-> finding out that I can't, even given an exponentially bigger universe to compute in, be predicted.
It would also potentially destroy my sense of identity. Even if I can be predicted, I can do anything I want: it's just that what I'll want is constrained. However, if the converse is true, any want I feel has nothing to do with me (and my intuitive sense of identity is similar to 'something that generates the wants and thoughts that I have') and I'm not sure I'll feel particularly obliged to satisfy them.
(Warning: writing it out made it sound ...
Well, since I suspect I don't have free will, I imagine not having free will would feel a great deal like how I feel right at this moment.
Knowing that someone out there already predicts my behavior perfectly
The halting problem shows that perfect prediction is impossible if you don't simulate the whole system. On the other hand there are plenty of cases where pretty good prediction is possible.
Observing myself act in ways I never intended to act, whether beneficial to me or not
When it comes to acting in way you don't intend to do, flirting is a good example. I remember an experience I was sitting next to a beautiful girl in a lecture.
We had good "chemistry". One time I look ...
When I try to imagine what it would be like to feel a specific absence of free will, the main difference is that I would do things without a need to exert "willpower," and with less internal monologue/debate.
Infants appear to have a mental life that is significantly different from children or adults. They may not have what a child or an adult would call free will, but they lack the means to tell us and they forget what it was like as they become children and adults.
Infants, children and adults who are asleep appear to have a mental life that is significantly different from that when they are awake. People who are asleep may not have what a person who is awake would call free will, but people who are asleep lack the means to tell us and they forget what it wa...
Here is one from reddit, tangentially related:
Jean-Paul Sartre is sitting at a French cafe, revising his draft of Being and Nothingness. He says to the waitress, "I'd like a cup of coffee, please, with no cream." The waitress replies, "I'm sorry, Monsieur, but we're out of cream. How about with no milk?"
Is there a standard definition of "free will" that everyone is assuming, and for some reason I don't know? If so could someone please point to or summarize it?
I confess that the more I try to think about this and related questions, the more I find myself confused. At this point I'm not even sure what the question is. "How would not having free will feel to you?" is a grammatically correct English sentence; but it seems no more meaningful to me than a sentence such as "How would not having open feet feel to you?"
That is, I am not sure what we are even talking about here. What is the difference between free will and will?
Free will is subtler than most of the suggested points in the post would suggest.
Randomness. If we can act randomly, that hardly proves or even suggests free will. My determinism could be probabilistic, resulting in things like "in this case I will take action A 20% of the time and action B 80% of the time." It is easy enough to implement something like this in simple computer code, although the objection might be made that it is a pseudorandom number generator we use to roll the dice. However, a random number generator based on measuring the...
Your comments seem like they answer a slightly different question: "What would it feel for a person who has free will to not have free will?". The right question is, "What would it feel for a person who doesn't have free will to not have free will?". (brushing all concerns about what 'free will' is under the carpet for now)
Another question that occurred to me is, "Should we try to feel as if we don't have free will?" It seems like people would behave differently if they felt as if they didn't have free will; they would act less responsibly. So even if it is true that we do not have free will, might it not be better for philosophers to convince people that we do?
On Monday, I have free will.
On Tuesday, I don't have free will.
I feel better on Tuesday, because I choose to get up very early on Monday to go to work and on Tuesday I have to sleep in.
I discount any effect by which someone else seems to control me as dissonance or terror; I define "me" to be the entity which controls me, which need not be the same as the entity which I might think perceives that control. (Terror comes from the thought that I might end up concluding that I am just a perception and cognition engine, without the interaction engine ...
Not having free will feels exactly like how everything feels like right now. Having free will is not well-defined enough to feel like anything.
Given the spike in free-will debates on LW recently (blame Scott Aaronson), and the usual potentially answerable meta-question "Why do we think we have free will?", I am intrigued by a sub-question, "what would it feel like to have/not have free will?". The positive version of this question is not very interesting, almost everyone feels they have free will most all the time. The negative version is more interesting and I expect the answers to be more diverse. Here are a few off the top of my head, not necessarily mutually exclusive:
Epistemic:
Psychological:
Physical:
For me personally some of these are close to the feeling of "no free will" than others, but I am not sure if any single one crosses the boundary.
I am sure that there are different takes on the answers and on how to categorize them. I think it would be useful to collect some perspectives and maybe have a poll or several after.