Everyone should agree that a college degree has some positive impact on future earnings. The problem is that the real cost of that degree has been doubling ever

Everyone should agree that a college degree has some positive impact on future earnings. The problem is that the real cost of that degree has been doubling every decade for more than 30 years while the real earnings of college graduates have increased very little both on an absolute basis and relative to those without a college degree. Assuming college is worth it today if these trends continue it's net value (benefit - cost) will rapidly decline. This is a problem.