That's what a breast-feeding doctor -- an OB, pediatrician or family physician with a subspecialty in breast-feeding medicine -- would have done in Kelly's case: a complete physical and medical history (yes, in fact, it is relevant if your mother couldn't make milk) on mom and baby to see if any physical or anatomical factors were affecting supply.

CNN: Is the medical community failing breast-feeding moms?

But when combined with other factors affecting demand and supply, the concept of energy independence comes into view over the next couple of decades.

FORBES: The Most Important Energy Developments Of 2012

In fact, if you ask me what the level of employment will be five or 10 years from now, I would probably ignore demand factors and focus on supply factors such as the expected growth in the labor force due to demographics and factors affecting the labor force participation rate.

FORBES: Supply Side Employment Growth