That being said, among the collateral damage was the 'retirement dream' of the hopeful baby boomers. The government could not afford to keep their promises of the these folks were supposedly entitled for. So that some of them were postponing their retirement plans and even contemplating of returning to the mainstream in the workforce. But job competition is very stiff considering the massive laid-off as a result from the meltdown thus, the potential retiree were left disillusioned and confused. The response to variability is a resilient instinct. Elastic instinct (also called the conditioned reflex) is an organism formed in the process of life change with conditions and reflection, under certain conditions unrelated stimulus be signals caused by reflections of the unconditioned stimulus. It is not innate, but the reflection of the organism under certain conditions under certain conditions. Conditioned reflex can make animal learning and memory and non-conditional reflex related, but completely different new reflection activity. The formation of conditioned reflex is the formation or connection of the cerebral cortex, which is based on non-conditioned reflex. With conditioned reflex, animals not only reflect things that have direct physiological meaning, but also those that have indirect physiological significance. Elastic instinct can make animals for the changed things to adjust their instinctive behavior, make it easy to adapt to changes in the environment, thus than rigid instinct has more flexibility and purpose, and the body through the conditioning can not before the arrival of the stimulus itself accordingly reaction, make the body more proactive and initiative. Anyway, elastic instinct is higher biological value of variability of external things more advanced way of ordering reaction, is on the rigid instinct, extension, and the synthesis, make rigid instinct has more purposeful and flexibility An open market enables enterprises to compete and cooperate with each other on a larger scale and at a higher level to promote economic development. People in the choice is to hold their currencies, or hold a certain foreign borrowing money, the first and want to hold what kind of currency brought him great benefits. And the yield of currencies first is measured by its financial market interest rates.