Work skills are like other possessions though where, when it comes time to sell them, you have to know how valuable they are to the market which may be different than what you think they should be worth.
Reference: http://en.wikipedia.org/wiki/List_of_countries_by_population...
(A Facebook job advert for Kernel Engineers.)
See also: https://github.com/facebook/flashcache/ - a write back persistent block cache for Linux, written by some of the Kernel Engineers at Facebook.
(I work there.)
There isn't a hard limit on how much wealth can be created (at least not until everybody has everything they could ever want), so more workers are a good thing.
The secret is to have a skill that somebody is willing to pay for -- and to keep looking for new things all the time.
But is there a breaking point in the system? Across the board, industries are becoming more efficient through technology, and require fewer workers. At the same time, the birth rate is increasing. What is the end game here?
* Spend more time getting experience and learning strategies you can put on a resume and less time taking silly courses and waiting for the tooth fairy to come along.*
That's very easy to say when you're employed. I suspect that a lot of people out there would love to pick up some experience, but have no means to do so. Especially when you rule out "silly courses", too.