http://sciencecareers.sciencemag.org/career_magazine/previou...
http://sciencecareers.sciencemag.org/career_magazine/previou...
And if society needs 5 new highly knowledgeable scientists a year, then producing 100 new PhD holders a year is over-producing them.
The other way to look at it is that failing to employ 95 qualified scientists means society's leaving a free lunch on the table.
What if the PhD is the ends (in and of itself), not just the means to some other end?
I would be quite surprised if the overflow of PhD holders in science spent that extra decade of double hours and crappy compensation just to say they did it, and expect that percentage is in reality negligible.
If more people are granted PhDs per year that want to do research than are needed, then there are too many produced. It's really that simple.
A PHDs doesn't seem to be any sign of intelligence in the last two places I have worked. Quite the opposite at times.
Since leaving academia for industry, i have met a few more genuinely brilliant people. But they don't have PhDs, because that's not what you do in industry.
You can't make inferences about people's intelligence from their possession of PhDs. All it tells you is that they are capable of sustained hard work in trying conditions and on low pay, given a sufficient supply of coffee.
It is not a 'product' it is a pursuit. It's like saying "Over producing exercise, or happiness".
You are mostly talking about American society as far as I can tell.
For sustained survival. It is reasonable to assume that anyone who decides to do a Phd is motivated to explore the depths of a topic and push the boundaries of human knowledge. However, that knowledge has value only in the scope of the world we live in. This value is governed by society, by us, and manifests itself as research grants, job opportunities etc. So one needs to consider this IF one wants to be productive (by doing a PhD). And of course, the whole point is void if one does not want to be productive, ergo, is not interested in his sustained survival.
This is a general observation. I don't see why it should be mostly about American society.