IstillBELIEVEinPOMO wrote: ↑Tue Aug 21, 2018 11:39 pm
Products of science, such as evolutionary psychology, and products of philosophy, such as physicalism, make it impossible now for any rational person to believe that we have free will and to see it as anything more than an illusion that has been useful for our survival.
There are so many errors in this statement that it's hard to know where to start. But we'd better have a go.
Firstly, Physicalism et all are not at all taken for granted as true. Not all "rational people" -- indeed, I would argue no really thoughtful people -- believe in mere Physicalism. It's a mere reduction, by most accounts today. Moreover, it's now beset with very serious empirical problems. One of them is the persistence of things Physicalism doesn't describe well, but which are essential components of (what we take for) existence. But on that subject, I'll have to refer you to people like Thomas Nagel, whose "Mind and Cosmos" provides a concise (but not complete) overview of some of the key issues.
Secondly, the postulate that morality is "illusions useful to our survival" has been shown inadequate in so many ways it's amazing anyone still says it at all. There are plenty of major problems with it -- and recently, these have led Materialistic philosophers to postulate bizarre entities like "selfish genes" to explain away why people do so much that is actually NOT "useful to [their] survival." But that is also a big discussion.
I think what this statement reflects is perhaps a cursory familiarity with Materialism as an idea, and perhaps the misperception that it is somehow tied to "science" and "rationality," as you put it. And I admit that it might have a real "common-sense" appeal at first -- if Physicalism were true, it would seem to cede the whole field to "science" -- at least, to those who have not thought about how much of science actually depends of the metaphysical (see M. Polanyi's "Personal Knowledge" for a full treatment of this). But I think this superficial "appeal" dies very, very quickly when we press some of the key questions further. So it would be unwise of us to jump to the conclusion that Physicalism can be salvaged.
Personally, I think it cannot. We need a better theory.
Therefore, morality is toast.
It would be, if free will were eliminated. As Kant put it, "ought implies can." If you cannot NOT do something, you cannot be held responsible for doing it, and the reverse is true too, of course. But as above, the elimination of free will cannot be simply taken for granted, as above.
But doesn't all of that depend on how morality is defined?
Not really. As even you say, it also depends on the elimination of free will, so it's not a single dependency.
It seems to me that the most widely understood and accepted definition of morality is "The way things ought to be". It is compared and contrasted with "The way things are".
It is not the way anybody wants things to be. It is not the way anybody thinks things ought to be. It is the way things ought to be, period.
This now reintroduces free will through the back door. For "ought" implies that things are not deterministically settled already. It posits that there is "another way things could have been," so to speak. But in a purely Physicalist or Materialist cosmos, that's clearly impossible. There is no "ought," just an "is." And it becomes inexplicable why we even have a concept of "ought," since no such thing can possibly exist.
If, say, the way things ought to be includes every member of society being treated the same, that could, in theory, become the way things are through, say, many millennia of the impersonal mechanism of evolution by natural selection, right?
Quite the contrary. "Natural selection" implies permanent inequality. Otherwise, there's nothing for which Mother Nature

can "select." Why would Mother Nature suddenly revert to egalitarianism, thus plugging her evolutionary machine and destroying the evolutionary development of the human species?
If the way things ought to be includes all members of ecosystems living within the systems' means, that could become the way things are through natural causes and effects, couldn't it?
As above, certainly not.
If there is nothing more than the way things are, why do we continue to think and talk about morality?
This is the real question. So thank you for raising it, even by so circuitous and dubious a route.