I don't think moving to the top 20% is such a strange metric to look at. Isn't that the 'american dream'? This is especially so if you use it as a comparative m

I don't think moving to the top 20% is such a strange metric to look at. Isn't that the 'american dream'? This is especially so if you use it as a comparative metric. The study isn't solely looking at this metric to determine whether social mobility in the US is a thing, it is using it as a metric to compare social mobility with other countries, in that sense I think it is valuable.