I've actually always pondered about the economic effect of the aging population and had done some research here and there about it. If we do not increase the current retirement age more frequently and gradually towards 70, there will definitely be economic consequences. I don't want to bore you guys with the math here, but imagine if one lives to 90 years old, and retires at 65. This individual would spend more than half of his or her life being "economically unproductive" (either in school - 22 years or retired - 25 years). With that being said, there have been many successful individuals, Morris Chang (83 years old) from TSMC for example, who are well over their retirement ages, but still making great contributions to business and technology. I believe that there should be a movement, especially with the advent of online education, where individuals in their late 40s / 50s should brush up on their understanding of emerging technologies, so that they can continue to be available in the working force without being technologically outdated (clearly, this statement does not apply to many of the individuals on this site, but for general masses, a brushing up on technology can certainly be a great thing).