From AACRO: after 10 years the earning potential for an engineering degree drops below someone with an English degree. Technical degrees are way more valuable out of the gate while soft science take time to develop.
To put it into other words: where an engineer can make 65k right after graduation an english major will start at 35k. The engineer's salary increases on par with inflation while the english major increases substantially over time and overtakes it on average at the 10 year point. The paraphrased quote from AACROs lobbyist: 'we're seeing through earnings study that technical degrees go stale over the career of an individual, this is shown when comparing the average english major vs the average electrical engineer' There's alot of background nuance (politics) there behind the study but the idea hasn't really been broached before in higher ed. It's really quite interesting to look at on a US scale, but that data hasn't been collected yet.
Oh: I'm not contesting that some soft science degrees aren't total wastes of money. Just that there will always be a place for a gender studies Harvard grad. We just don't need 10,000 of them.