Here. I haven’t read Rosenberg’s book yet, but from this review, it sounds like the book at least presents a clear expression of a full-blown, “mad-dog scientism” world view. As the reviewer summarizes the view’s outcomes,
There is no God. Reality is what physics says (and evolutionary biology). There is no purpose to anything, anywhere. Never was, never will be. There is therefore no meaning to life. I’m here because of dumb luck. Prayer doesn’t work. There is no such thing as a soul. There is no freewill. When we die, everything stays the same except without us. There is no moral difference between good and bad, right and wrong. You should be good because it makes you feel better than being bad. Anything goes. Love is a solution to a strategic coordination problem. It’s automatic, programmed so there’s no need to go out looking for it. History has no purpose (see above) because the future is less and less like the past. Ditto economics. Technology makes predicting the future a guessing game and their rational choice theories are outrageously bad psychology.
Of course, the big problem most people start worrying over at this point is: then why should I care about other people, and doing the right thing? The reviewer answers on Rosenberg’s behalf:
But then, if there are no categorical imperatives (except linguistically) don’t abhorrent values become equal with decent ones? If there’s nothing in the naturalistic worldview to underwrite goodness then Hitler is equal to Gandhi. Rosenberg accepts this but says we shouldn’t worry. Rosenberg says we are all just hard-wired to be nice. Morals are for him a type of norm expressivism. There are facts paired to norms that form a core system that’s universal, shared as a kind of species bedrock. As a species we’ve evolved the same values. There are other facts then that these pairings interact with, local ones including eco systems. So Rosenberg argues that as a species we share the same values and and that all moral disagreement is about factual matters if it persists beyond clearing up background cultural things.
Well, that’s lucky for us. Or I guess I shouldn’t think of it as lucky. It’s just the way things turned out, and since they turned out that way, I end up feeling good about it. Had we evolved to lie, cheat, and steal — or if in the coming centuries, we decide to breed ourselves in that direction — then we’ll feel lucky about that too. I’m feeling better already!