Is a college degree leading to higher wages causation or correlation?
Granted that someone "strives" to go for college and works harder to do it (scholarships, etc), so there's a goal, but I don't think college actually causes higher wages. If it was done better it can be a facilitator, but my gut feeling, after going through the liberal arts university system and having gained certain things while there, is that it's mostly a waste of time and most of it can be learned for cheaper and faster in other ways.