9. I’d also expect them to be able to try more radical things. For example, in today’s world, it’s unlikely that you could run a randomized experiment on what happens if people currently living in New York just decide to move to Chicago. It would be too hard to find people willing to be randomly assigned to stay in New York or move to Chicago. But in a world of digital people, experimenters could pay New Yorkers to make copies of themselves who move to Chicago. And after the experiment, each Chicago copy that wished it had stayed in New York could choose to replace itself with another copy of the New York version. (The latter brings up questions about philosophy of personal identity, but for social science purposes, all that matters is that some people would be happy to participate in experiments due to this option, and everyone could learn from the experiments.)
9. I’d also expect them to be able to try more radical things. For example, in today’s world, it’s unlikely that you could run a randomized experiment on what happens if people currently living in New York just decide to move to Chicago. It would be too hard to find people willing to be randomly assigned to stay in New York or move to Chicago. But in a world of digital people, experimenters could pay New Yorkers to make copies of themselves who move to Chicago. And after the experiment, each Chicago copy that wished it had stayed in New York could choose to replace itself with another copy of the New York version. (The latter brings up questions about philosophy of personal identity, but for social science purposes, all that matters is that some people would be happy to participate in experiments due to this option, and everyone could learn from the experiments.)