Tuota, tuossahan puhutaan kovasti siitä Lopullisesta Rikastumisesta, jonka edessä seisoo tuon "medium and short runin" negatiiviset efektit, jotka tutkijan mukaan kyllä vääjäämättä katoavat koska Amerikka.
"Ethnic diversity will increase substantially in virtually all modern societies
over the next several decades, in part because of immigration. Increased
immigration and diversity are not only inevitable, but over the long run
they are also desirable. Ethnic diversity is, on balance, an important social
asset, as the history of my own country demonstrates."