Without knowing that difference, could you calculate reparations? Because if what you're trying to do is say, has the united states treated this group of citizens fairly? And then i've also provocatively said that the correct comparison would be how american black citizens who have a legacy back to the civil war,. How are they doing compared to the people who did not get captured as slaves and taken to America? So would the descendants of the african residents? Are they doing better or worse than Americanans? You couldn't calculate it t just wouldn't be possible. It's one of the reasons that economists can usually agree each other eventually, and non economists can't is it?