Let's be clear on "causal necessity". Causal necessity is a universal constant. There are no uncaused events. Every event that ever happens is the reliable result of prior events. From my perspective, these are indisputable logical facts. There are no such things as "uncaused" events, but only events for which the causes may as yet remain unknown.
No need to remind me of this. That is the definition which I work with. We agree on the nature of determinism. The single point of dispute is the compatibilist definition of free will.
Ironically, I dealt specifically with our definitions of free will in the other thread this morning. See:
Do you possibly agree, that ...
But I think we may still disagree about the logical implications of determinism. If you don't mind, I'd like to
go into that a bit here:
The Stanford Encyclopedia of Philosophy (SEP) article, “Causal Determinism”, describes determinism in several different ways. Some of these are good. Some are not.
“
The roots of the notion of determinism surely lie in a very common philosophical idea: the idea that everything can, in principle, be explained, or that everything that is, has a sufficient reason for being and being as it is, and not otherwise.” [2] (SEP)
Determinism is based in the belief that the physical objects and forces that make up our universe behave in a rational and reliable fashion. By “rational” we mean that there is always an answer to the question, “Why did this happen?”, even if we never discover that answer.
This belief gives us hope that we may uncover the causes of significant events that affect our lives, and, by understanding their causes, gain some control over them. Medical discoveries lead to the prevention and treatment of disease, agricultural advancements improve our world’s food supply, new modes of transportation expand our travel, even to the moon and back, and so forth for all the rest of our science and innovation. Everything rests upon a foundation of reliable causation.
“
Causal determinism is, roughly speaking, the idea that every event is necessitated by antecedent events and conditions together with the laws of nature.” [3] (SEP)
A logical corollary of reliable causation is causal necessity. Each cause may be viewed as an event, or prior state, that is brought about by its own causes. Each of these causes will in turn have their own causes, and so on, ad infinitum. Thus, reliable causation implies the logical fact that everything that happens is “causally necessary”. Everything that has happened, or will happen, will only turn out one way. A key issue in determinism is what to make of this logical fact.
Determinism itself is neither an object nor a force. It cannot do anything. It does not control anything. It is not in any way an actor in the real world. It is only a comment, an assertion that the behavior of objects and forces will, by their naturally occurring interactions, bring about all future events in a reliable fashion.
So, the next step is to understand the behavior of the actual objects and forces.
“
Determinism is deeply connected with our understanding of the physical sciences and their explanatory ambitions…” [4] (SEP)
We observe that material objects behave differently according to their level of organization as follows:
(1) Inanimate objects behave
passively, responding to physical forces so reliably that it is as if they were following “unbreakable laws of Nature”. These natural laws are described by the physical sciences, like Physics and Chemistry. A ball on a slope will always roll downhill. Its behavior is
governed by the force of gravity.
(2) Living organisms are animated by a biological drive to survive, thrive, and reproduce. They behave
purposefully according to natural laws described by the life sciences: Biology, Genetics, Physiology, and so on. A squirrel on a slope will either go uphill or downhill depending upon where he expects to find the next acorn. While still
affected by gravity, the squirrel is no longer governed by it. It is
governed instead by its own
biological drives.
(3) Intelligent species have evolved a neurology capable of imagination, evaluation, and choosing. They can behave
deliberately, by calculation and by choice, according to natural laws described by the social sciences, like Psychology and Sociology, as well as the social laws that they create for themselves. While still
affected by gravity and biological drives, an intelligent species is no longer governed by them, but is instead
governed by its own choices.
So, we have three unique causal mechanisms, that each operate in a different way, by their own set of rules. We may even speculate that quantum events, with their own unique organization of matter into a variety of quarks, operates by its own unique set of rules.
A naïve Physics professor may suggest that, “Everything can be explained by the laws of physics”. But it can’t. A science discovers its natural laws by observation, and Physics does not observe living organisms, much less intelligent species.
Physics, for example, cannot explain why a car stops at a red traffic light. This is because the laws governing that event are created by society. While the red light is physical, and the foot pressing the brake pedal is physical, between these two physical events we find the
biological need for survival and the
calculation that the best way to survive is to stop at the light.
It is impossible to explain this event without addressing the purpose and the reasoning of the
living object that is driving the car. This requires nothing that is supernatural. Both purpose and intelligence are processes running on the physical platform of the body’s neurology. But it is the process, not the platform, that causally determines what happens next.
We must conclude then, that any version of determinism that excludes purpose or reason as causes, would be invalid. There is no way to explain the behavior of intelligent species without taking purpose and reason into account.
And that is the point I'd like to make here, that all human behavior, including choosing what we will do, is an essential part of causal necessity.
Causal necessity never replaces us as the meaningful and relevant cause of our actions, or anything else. Causal necessity is
about us, and about all the other
actual objects and forces that make up the physical universe. And it simply says that all events will unfold in a single way, a way that is caused by all of the individual objects and forces just doing what they naturally do.
But back to free will...
In the definitions of "free will", each dictionary clearly separates freedom from causal necessity into a separate definition, because it is not the usual meaning of free will, as most people understand it.
Free Will Definition #1:
Merriam-Webster: 1: voluntary choice or decision 'I do this of my own free will'
''Compatibilism is the belief that free will and determinism are compatible ideas, and that it is possible to believe both without being logically inconsistent.[1] It may, however, be more accurate to say that compatibilists define 'free will' in a way that allows it to co-exist with determinism.'' - wiki.
That expresses the compatibilist definition of free will. Including the common perception of free will; the ability to consciously choose from a range of options.
Yes. The compatibilist definition of free will, the practical and operational meaning, has been around for a long time. It is simply a voluntary, unforced choice, one free of coercion and undue influence. And it is the definition used when assessing a person's moral or legal responsibility for their actions.
But if definitions and common perceptions are enough to resolve the free will debate, it would have been settled long ago.
I'm sure that if the paradox had not trapped so many otherwise intelligent minds, the debate would have ended a lot sooner. But I suspect that it got caught up in the religious debates, and that gave it a head of steam.
'The brain does it, therefore free will' is not a valid argument because it doesn't take critical information into account: the nature of brain agency and determinism.
We wouldn't even bring up the brain if the incompatibilists didn't throw neuroscience into the mix, with its own unique version of causal necessity. But, causal necessity, in whatever form it takes, has no impact upon operational free will. Operational free will makes no claims to being an uncaused event.
The common perception of freely consciously choosing from sets of options is an illusion because because decisions are determined before being represented consciously, and determinism does not allow alternate decisions or actions.
The myth that determinism makes every empirical event an illusion is another false implication of determinism. Determinism guarantees that a specific choice will be made, from a specific set of options, according to specific motives and evaluations of those options, and that the choosing will not be an illusion, but an actual event that takes place in empirical reality. That's what determinism actually implies.
So both the compatibilist definition of free will and the common perception of free will are not sufficient to prove the proposition: that will is indeed free.
There is no proposition on the table "that will is indeed free". That's your strawman definition of free will. The compatibilist definition of free will is that it is an event in which someone decides for themselves what they will do, while free of coercion and undue influence.
The available evidence supports the opposite; that will is not free, that decisions and actions are determined prior to awareness or will.
The will is always causally determined. The mechanism of causally determining a person's deliberate will is the person's choosing operation. Choosing is a deterministic operation that inputs two or more options, applies some appropriate criteria of comparative evaluation, and outputs a single choice.
Now, whether this operation is perform entirely unconsciously and then conveyed to conscious awareness along with the reasons for the choice, OR, if conscious awareness is on board from the beginning as a participating function,
does not matter. The person who ordered the salad will be still be held responsible for the bill, after all, he is the one who chose to place the order.
There is no incompatibilist free will. Incompatibilists question the compatibilist definition of free will.
Good. If there is no incompatibilist free will then the only free will left is the one the compatibilists describe.
Free will is
not "freedom from causal necessity". Free will
is a deterministic event in which a person decides for themselves what they will do, while "free of coercion and other forms of undue influence". Nothing more. Nothing less.
That is where it goes wrong. 'The brain does it, therefore free will' is not sufficient.
No. That's your free will, not mine. The brain must make the choice while free of coercion and undue influence, that's my free will.
It doesn't take the nature and means of decision making and action into account.
The nature of deliberate choosing is that it is a deterministic operation.
The means of deliberate choosing is that it involves multiple functional areas of the brain, including functions that occur beneath conscious awareness.
It just asserts, 'the brain does it, I am the the brain, therefore free will'' - Ignoring that what goes on within the brain cannot be controlled or regulated through the agency of will.
What is asserted is simple and clear. Free will is an event in which a person decides for themselves what they will do, while free of coercion and undue influence.
There is no requirement that what goes on within the brain be consciously controlled or deliberately willed. That's another strawman.
Will is agency. Will is the motive force behind the action. Will may be conscious or unconscious and still perform its function. Will is a function of the neural architecture.