There’s an old Soviet-era joke about communist notions of sharing. Two party workers, let’s call them Boris and Ivan, are chatting:
Boris: If you had two houses, would you give one to your comrade?
Ivan: Of course!
Boris: If you had two cars, would you give one to your comrade?
Ivan: Without a doubt!
Boris: If you had two shirts, would you give one to your comrade?
Ivan: You’re crazy, I couldn’t do that!
Boris: Why not?
Ivan: I have two shirts!
There are two things going on here. One is of course, the skin-in-the-game effect. The other is what I call the veil of scale: we choose small-and-local behaviors differently depending on how we think those behaviors will have emergent scaled consequences. The joke here depends on going from large-scale to small-scale questions, surprising Ivan with a question that’s real for him.
The veil of scale is about thought experiments of the form: how would you act in a situation if you didn’t know the extent to which your actions were going to be scaled?