Peter Holmes wrote: ↑Thu Jul 25, 2024 6:33 am
Immanuel Can wrote: ↑Wed Jul 24, 2024 4:50 pm
Peter Holmes wrote: ↑Wed Jul 24, 2024 3:40 pm
How can a non-physical cause have a physical effect? Or how can a physical effect be evidence for a non-physical cause? What is the supposed causal mechanism? Magic?
No, Pete; but your own wording shows you're already pre-determining what the only answer you'd accept would be: a "mechanism." But "mechanics" are for physical entities, so you've already asked us to assume that the only possible answer will be a physical one.
I didn't ask what the physical causal mechanism is - just what the causal mechanism is.
It's still a physical entity, a "mechanism." Calling it a "method" won't change that, unless one is already prepared to entertain the possibility of non-physical causes. Likewise, if one is not, then one will not accept evidence of any such -- which I have given, in the form of reference to such phenomena as "mind," "reason," "volition," "personhood," "values," and such, all of which are things universally conceded to exist (because nobody can live without assuming them), but which are not going to be unpackable in terms of "method" or "mechanics."
This is called the "emergence" problem, Pete. And I can't explain all of it here, because it's a big and complex field: but basically, the problem is how something like "mind" could possibly "emerge" from non-sentient matter...which we know had to be all there was in the universe at some point, if progressivism is at all true. There had to be a state of the universe in which there were only chemicals and electricity, for example. So how does something like "mind" ever appear? The guess (and it's a pure guess) is that it has to "emerge" more or less 'ready to go' at some point in the development of the brain -- but nobody even pretends to know how this could come about: so no "mechanism" for it can be offered.
What if things like "mind" or "choice" or "freedom" are actually explanations of original causes of events? What if "Pete decided to go to the store" does not have a prior determinative explanation in the secondary fact of Peter's physical hunger, or Peter's physical desire to move, but in something like Peter's acquisitive intentions of the moment?
What we call the mind, choice and freedom aren't explanations at all, causal or otherwise.
This is exactly what I was saying that Physicalism amounts to. But it's 100% assumptive, and without scientific or empirical basis. It's just a story people choose to believe for other reasons. For to foreclose on the question of whether or not things like "mind" and "choice" can be legitimate causal explanations, even before all possible investigation, is simply to choose one's conclusion before any inquiry can even begin.
You claim that, at some point, a non-physical cause can have a physical effect.
So do you, if I judge by your actions, rather than your claims. Even by typing, you're doing that very thing. The state of your mind is causing your fingers to move in certain patterns that express ideas you have in your consciousness; and you're aiming to have a conversation with another mind or minds to achieve a change in it or them, too.
A causal explanation which explains nothing isn't an explanation at all.
You'll recall that that is my critique of Physicalism. It simply arbitrarily precludes certain kinds of explanation from the field, prejudicially damning them as "not explanations," and then claims victory. It hasn't proved a thing: it just tilted the table so far in its own favour that no opposition is able to get uphill anymore.
That seems intuitively true: we all think and act as if we "make up our minds" about things, and then enact them on the physical world (with varying degrees of success, of course). But that's how we all think and feel that we live. So if that's not how things really are, then I think the Physicalist is the one who needs the explanation: why do we all have this conviction that we make choices and enact our wills, when choice and will are actually not final explantions of anything? And why are they not? The answer must surely be something better than, "because I'm only prepared to consider physical cause-and-effect relations."
So, you appeal to intuition and 'how we all think and feel', and what we're inclined to say.
Yes -- but only to settle the question of burden of proof. I suggest that any theory as thoroughly counterintuitive and as thoroughly impossible to live out consistently as Physicalism owes an explanation that is better than the intuitive one. Until it can provide one, we have no intuitive reason to believe it at all, and no scientific evidence for it: so what's the point of believing it?
Plausibly, the only reason, if we're honest, is that we're coming to it with preformed assumptions, perhaps based on a desire for certain metaphysical conclusions we can't otherwise justify to ourselves. That's possible.
Why assume that what we call "mind," "personhood," "freedom" and "values," and "reasoning." are non-physical realities?
Two reasons: we all, for some reason Physicalists never try to explain, do just that. And secondly, because pre-imposing the rule that only physical things are allowed to exist is not a genuine way to investigate the question.
1 The explanation for human belief in non-physical things and causes is easy. Ignorance and fear are part of it.
That's merely
ad hominem, and has nothing to do with whether or not the non-physical theory is the truth. You can't defeat the truth value of a theory by slandering the people who believe it, you know. You have to provide something to disprove the theory they're holding.
But let's play anyway, because it makes a further point: if it's "ignorance," and "fear," then let's justify that. Let's prove that any belief in non-physical causes can only be caused by "fear" and can only involved "ignorance" of something. What is that "something" of which these people are allegedly "ignorant"? It can't be of the truth of Physicalism itself, because Physicalism is merely a hypothetical postulate taken in advance. So of what scientific or empirical verities are they "ignorant"?
2 I've never come across a physicalist who claims there can be no other than physical things and causes.
Also merely
ad hominem. If are logically Physicalists are inconsistent with regard to their theory, and even if all are, that may be because Physicalism itself contains a problem that convinces everybody else to abandon it, unless they are prepared to buy into the irrational claim that the world can be totally physical and yet have genuine explanations how non-physical things can remain causal.
That being the case, it would mean that Physicalists are essentially behaving as irrational people in this one way, in order to save their Physicalism, and all of them would be doing that or else leaving Physicalism. So their consistency with each other would be utterly unsurprising.
Whether that's how it is, we could debate: but it's certainly not the case that tacit agreement among Physicalists you've met would constitute an argument in favour of the coherence of Physicalism itself.
Because we talk about them, but can have no physical evidence for their existence?
We do have physical evidence of them, and plenty of it. If Peter chooses to go to the store to satisfy his acquisitive desires, that's as comprehensive an explanation as maybe we need for why Peter's at the store. And the fact that Peter is now at the store is a physical fact: so we are certainly seeing the outcome on a physical level, the results being evident to us; we're perhaps just not able to limit the cause to physical preconditions. Peter's will is a genuine explanation for why he's ultimately at the store.
So, choosing to do X is physical evidence for the existence of a non-physical thing or cause: choice or freedom or the will - and so on.
Prima facie, at least. That's the theory we should go with, until proved otherwise, that means. The burden's not on the non-physicalist, who is behaving in a way that makes sense of our universal intuitions and behaviours; the Physicalist is currently asking us to believe, instead, something for which we have neither intuitive plausibility nor any scientific evidence. Clearly, we should side with what seems intuitively right, in this case...until Physicalists can actually do something about that, by way of providing proof.