Age milestones and round birthdays

Are you 50+ years old, and do you find it a little hard to believe that you have reached another round birthday? You might find some comfort in the thought that throughout most of the history of mankind, at this age you would probably have been dead for a long time. In fact, you are in overtime – a gift to today’s middle-aged and elderly people, and you have just begun the long journey towards 100 years. (*)