Ah, so your account,
@Mark S, does
not tell us what we should do?
...and yet "...science can provide useful instrumental (conditional) oughts for achieving shared goals"? Despite nine threads on the same topic, perhaps your account is not as clearly expressed as you think?
If your goal can be obtained by cooperation and you wish to act consistently with those objective moral values that sustainably maintain cooperation, then you ought (instrumental) to act consistently with those objective moral values. — Mark S
Let's look at the logic here. Is this it...
If P can be obtained by cooperation and you wish to P, then you ought to P.
The clause on cooperation doesn't appear to do anything here. Your argument looks to be that if you want to do something then you ought do it. But not only is it, as Mick pointed out, that you can't always get what you want, sometimes you ought not get what you want.
Sure, if you have the urge to pee you probably ought, but in the appropriate place and so as not to inconvenience others. Of course we might well let folk do as they want, unless there is good reason not too; and
that, what is to count as "good reason", is what ethics is about.
Descriptively moral behaviors are parts of cooperation strategies — Mark S
I put it to you that rather, cooperation strategies may be part of achieving our goals. You've got it the wrong way around.
Universally moral behaviors are parts of cooperation strategies that do not exploit others. — Mark S
What is claimed here... needs unpacking. "Universal moral behaviours" is a problematic term, and obviously, contrary to what is implied, folk can cooperate in order to exploit others. Your "Universal moral behaviours" are presumably those found by anthropological examination of what people do; and you agree, at least sometimes, that a description of what we do does not tell us what we
ought do. Your term "Universal moral behaviours" carries the insinuation that these merely observed behaviours bring moral weight. But any such moral weight must be argued for separately. I don't see where you have done this.
As for the relation between cooperation and justice, take a look at “
The Ones Who Walk Away From Omelas” by Ursula K LeGuin (thanks,
@unenlightened), and consider those who cooperate in the plight of the child.
So sure, cooperation, games theory, and anthropology might well be a useful part of a moral perspective; but they are not the whole.