Interesting point from the paper: > the average age for when immigrant founders got their social security number is close to 26 years old,which is a rough

Interesting point from the paper: > the average age for when immigrant founders got their social security number is close to 26 years old,which is a rough proxy for when these immigrants entered the United States. On the other hand, the average age at founding a VC-backed company is 49 years old, which indicates that the majority of founders, even in the latter part of the sample,likely immigrated to the United States before 2004