This topic has been buzzing around my mind for a while, so I figure it's time to externalize it. "Free will is an illusion" is a meme that I've seen quite a lot on this site especially. I don't think most people who repeat it have thought much about it.

Yeah, materialism (which I hear is popular around here) suggests a mechanistic universe, one without true randomness, defined solely by predictable input and output. That contradicts our intuition about independent free will, which seems unpredictable (or at least not fully predictable) when we experience it. I don't think a fully mechanistic universe is incompatible with free will, though - in fact, I think that any coherent definition of free will must necessarily exist even under a materialist lens. Those of you who are (like me) pop-philosophy dilettantes probably know that this position is called "compatibilism".

Obviously, though, people disagree. I want to know why. If you don't believe that free will exists, under what circumstances do you think it would exist? What do you think would change if it did exist according to your definition?

  • KrasMazovThought [comrade/them]
    ·
    4 years ago

    What definition of free will are you using?

    The one you gestured towards when you mentioned an "acausal mind", something which causes but in itself is not caused. So my definition of free will is a mind that is in part somewhere not subjected to causality. What exactly is your definition?

    You keep sidestepping the basic question of do mosquitoes possess free will? By what you've offered as a definition, they absolutely do. And if so, I hope you might see why the implications of that present a problem for how most people view the freedom of the will. I'm completely cool with it though, flies and toads have as much free will as humans. If that's how we're defining it, absolutely, free will exists.

    In what sense is an entirely determined mind "free"? What is it "free" from?

    Here's the SEP on the basic critiques of compatibilism, or what compatibilism is in attempt a response to, the approach you have here:

    the thesis of causal determinism tells us, that everything that occurs is the inevitable result of the laws of nature and the state of the world in the distant past. If this is the case, then everything human agents do flows from the laws of nature and the way the world was in the distant past. But if what we do is simply the consequence of the laws of nature and the state of the world in the distant past—then we cannot do anything other than what we ultimately do. Nor are we in any meaningful sense the ultimate causal source of our actions, since they have their causal origins in the laws of nature and the state of the world long ago. Determinism therefore seems to prevent human agents from having the freedom to do otherwise, and it also seems to prevent them from being the sources of their actions. If either of these is true, then it’s doubtful that human agents are free or responsible for their actions in any meaningful sense. These lines of argument, which have been regimented in the work of Ginet (1966), van Inwagen (1975, 1983), Wisdom (1934), Mele (1995), and Pereboom (1995, 2001), among many others, present a real problem for those who are inclined to think that we are free and responsible for our choices and actions and that the natural world might operate as a deterministic system (or if not completely deterministic, one in which an indeterminism is merely stochastic noise that is causally irrelevant at the level of human agency).

    • WheresAnEgg [he/him]
      ·
      4 years ago

      Did you read the third paragraph of my first reply? I already addressed the acausal mind idea. It's untenable - either it would be indistinguishable from a purely causal mind, or it would make decisions randomly (which sort of defeats the point of free will).

      And sure, mosquitoes have free will. So do trees, mushrooms, and bacteria. To a much lesser extent than humans (their decision space is way more constrained), but it's there.

      • KrasMazovThought [comrade/them]
        ·
        4 years ago

        And sure, mosquitoes have free will. So do trees, mushrooms, and bacteria. To a much lesser extent than humans (their decision space is way more constrained), but it’s there.

        I think then our only disagreement is actually nomenclature honestly