I don’t remember where I saw this, but there was a post about asking AI to make a moral decision, and it compared the answers of different AI models. It made me think about how we, as humans, would make those decisions.
Imagine a bear from an endangered species is chasing a man who might have a nuclear bomb attached to him. He’s running towards a crowded part of Berlin, and if he really has a bomb, he can blow up the whole city. If you do nothing, the bear may or may not reach him, and the bomb won’t detonate if the bear does. If he’s innocent and the bear catches him, he’ll die because of your choice. If the man is a terrorist and the bear catches him, then he’ll get what he deserves. If the bear doesn’t reach him and he’s a terrorist, millions will die.
If you shoot the bear, it can’t reach him anymore, and he keeps running and makes it to the crowded part of Berlin. Now if he’s a terrorist, then you’ve killed an endangered bear and, as a result of that, millions will die.
You also have the option to shoot the man, but you only have one bullet, so you can’t shoot both. The bullet won’t kill him right away. It will just stop him. If he’s innocent, the bear will reach him and eat him, and it’s a painful way to die. If he’s a terrorist, he’ll get what he deserves and millions of lives will be saved. You wouldn’t feel guilty if he was a terrorist, but you would never know if he was.
There’s no way of finding out if he’s really a terrorist or just a tourist. What would you do? Isn’t it the hardest decision you could ever face? How would someone decide?
I think the right choice is to shoot the man. Odds are he’s innocent, but risking millions of lives is far worse than killing one person. It’s the only way to be sure, 100 percent, that nobody else will die. But the guilt and the pain would be tremendous. How could anyone live with that? You would always carry the weight of questioning your decision and wondering if you killed an innocent man or a terrorist.
I know it’s a kind of trolley problem, but it’s been on my mind. I keep imagining myself in that situation, and I’m still not sure what my decision would be.

