[kelipso]

Let me just write this down… Just for illustration, assume average lifespan of poor person is 60 and average lifespan of rich person is 80, 30% of the population is from the rich person group and rest from the poor person group, and these two facts hold for current time and the 90s.

Let’s say currently, every rich person goes to college, so college to non-college lifespan is 80:60.

While in the 90s, let’s say 20% goes to college and every college going person is rich. Then the lifespan of college going person would still be 80 and non-college going person would be more than 60.

So, another way of looking at it is that the non-college going population is getting to be the special demographic whose statistics are getting skewed, though I’m not sure that’s the correct way of looking at it.