> There's a different form of positive selection bias for that: to survive in a country where you're there illegally, cut off from many high-paying jobs because

> There's a different form of positive selection bias for that: to survive in a country where you're there illegally, cut off from many high-paying jobs because of that, and may be deported at any time, it takes a particular form of resourcefulness and ambition. We can replace "illegal immigration" in the above statement with any other illegal activities and it will still hold true.