How about scientism’: an ontological claim is coherent only if it has scientific implications?
Eliezer:
I doubt you can conceive a non-prime number as prime. I think that the best way to think of “can conceive” here would be “can fully contemplate, without anything blowing up.” So I can conceive of a zombie world, but I can’t conceive of a world where, say, P is both true and not true, because I’d not know how to evaluate anything there. Likewise, I can’t conceive of, say, 4, as a prime number, because I can’t understand 4 except as it implies 2x2. That might strengthen your perceived connection between conceivability and logical possibility...
Richard:
How about scientism’: an ontological claim is coherent only if it has scientific implications?
Eliezer:
I doubt you can conceive a non-prime number as prime. I think that the best way to think of “can conceive” here would be “can fully contemplate, without anything blowing up.” So I can conceive of a zombie world, but I can’t conceive of a world where, say, P is both true and not true, because I’d not know how to evaluate anything there. Likewise, I can’t conceive of, say, 4, as a prime number, because I can’t understand 4 except as it implies 2x2. That might strengthen your perceived connection between conceivability and logical possibility...