[ars]

> One obvious problem is that it appears to be highly immoral to generate a simulation in which millions or billions of sentient beings suffer

If you had a computer program that printed "I'm suffering" on the screen, would you consider that real suffering? Or just a robot that doesn't actually feel anything, it just simulates it?

Or a game where your character is low on health points - is that game character really suffering?

To that other being we may be the same way. I internally "feel" real, but that being may not consider it so, and even if I tell them they may just be excited at how good their simulation is.