HMM: The Aging Brain Isn’t Declining – It’s Adapting, Study Finds. “There might be an evolutionary purpose to all this: For those of us lucky enough to make it to old age, the priority becomes passing on information, rather than trying to remember the specifics of day-to-day life.”

I’ve often thought that the reason why old people repeat old stories and lose their distant memory last is because as tribal memory stores, they need to download their storage before they die.