Excellent read.
The links are worthwhile reading as well:
For example:
http://www.reuters.com/article/2015/01/20/oil-economy-investment-kemp-idUSL6N0UZ41G20150120
...The same dynamics are being played out on a global scale. High-paying jobs and capital investment are being lost in the oil and gas sector faster than they are being added in the other industries that will eventually replace them.
The global oil and gas sector has been a massive engine of global growth over the last five years and is now coming to an abrupt halt.
The speed and magnitude of price changes matter: the 60 percent reduction in oil prices in just seven months counts as a price shock of the first magnitude.
Rapid price changes (positive or negative) in key raw materials (and none is more vital than oil) always produce some economic dislocation.
Prices change faster than consumers and businesses can adapt to them, causing some loss of potential output and employment.
Lower energy prices will, eventually, be an unambiguous net benefit for the United States, and for much of the rest of the world economy. But the process of adjustment itself could be painful.