BY FROMA HARROP Could an aging population be good for economic growth? I mean, isn’t it an accepted fact that our economy will suffer as more Americans pass age 65 and start sitting around all day, soaking up government benefits? That’s the spiel, but many economists are not buying it. Older workers can fill in the labor gaps caused by falling birthrates. And employers often undervalue their expertise, wrongly assuming that younger is better and cheaper. […]