To those who say "Nothing is real," I once replied, "That's great, but how does the nothing work?"
Suppose you learned, suddenly and definitively, that nothing is moral and nothing is right; that everything is permissible and nothing is forbidden.
Devastating news, to be sure—and no, I am not telling you this in real life. But suppose I did tell it to you. Suppose that, whatever you think is the basis of your moral philosophy, I convincingly tore it apart, and moreover showed you that nothing could fill its place. Suppose I proved that all utilities equaled zero.
I know that Your-Moral-Philosophy is as true and undisprovable as 2 + 2 = 4. But still, I ask that you do your best to perform the thought experiment, and concretely envision the possibilities even if they seem painful, or pointless, or logically incapable of any good reply.
Would you still tip cabdrivers? Would you cheat on your Significant Other? If a child lay fainted on the train tracks, would you still drag them off?
Would you still eat the same kinds of foods—or would you only eat the cheapest food, since there's no reason you should have fun—or would you eat very expensive food, since there's no reason you should save money for tomorrow?
Would you wear black and write gloomy poetry and denounce all altruists as fools? But there's no reason you should do that—it's just a cached thought.
Would you stay in bed because there was no reason to get up? What about when you finally got hungry and stumbled into the kitchen—what would you do after you were done eating?
Would you go on reading Overcoming Bias, and if not, what would you read instead? Would you still try to be rational, and if not, what would you think instead?
Close your eyes, take as long as necessary to answer:
What would you do, if nothing were right?
Suppose you learned, suddenly and definitively, that nothing is moral and nothing is right; that everything is permissible and nothing is forbidden.
Suppose I proved that all utilities equaled zero.
If I still feel hunger then food has an utility > 0. If I don't feel anything anymore, then I wouldn't care about anything.
So our morality is defined by our emotions. The decisions I make are a tradeoff. Do I tip the waiter? Depends on my financial situation and if I'm willing to endure the awkwardness of breaking a social convention. Yes, I've often eaten without tipping.
Do I save the human in need? Yes, I have the tendency to do so, although this also depends on a series of factors. And I'm aware that this is also hardwired empathy. Abstract moral principles are just rationalizations from our emotionally hardwired brain.
I cannot imagine myself without morality because that wouldn't be me, but another brain.
Does your laptop care if the battery is running out? Yes, it will start beeping, because it is hardwired to do so. If you removed this hardwired beeping you have removed the laptop's morality.
Morality is not a ghost in the machine, but it is defined by the machine itself.
Eliezer you can prove to me that all utilities are 0 but since that wouldn't change my emotional wiring, for me some utilities would still be != 0.