Thats actually a really good dilemma if you think about it. Like if everyone doubles it you basically don’t kill anyone. But you’ll always risk that there’s some psycho who likes killing and then you will have killed more. And if these choices continue endlessly you will eventually find someone like this. So killing immediately should be the right thing to do.

This is really the only answer. The only thing that makes it “hard” is having to face the brutality of moral calculus

Now, what if you’re not the first person on the chain? What if you’re the second one. 94 the n one? What now? Would you kill two or n knowing that the person before you spared them?

The thing to do is kill now even if it's thousands. Because it's only going to get worse.

The best time to kill was the first trolly. The second best time to kill is now.