How is it problematic and not just an arbitrary metric? You also presuppose that everything should be relative to absolute terms. What evidence do you have tha

How is it problematic and not just an arbitrary metric? You also presuppose that everything should be relative to absolute terms. What evidence do you have that social mobility should be relative to absolute terms rather than relative to the quintiles defined by the society a given person lives in? Why would we expect mobility in absolute terms for a society that ranges from 1-100 in wealth, compared to a society than ranges from 40-50? We should expect mobility to be with respect to the society’s wealth range.