With the rate medical tech is advancing, almost as fast as computing, 300 years from now might be within our lifetime just by other means of extension. We have

With the rate medical tech is advancing, almost as fast as computing, 300 years from now might be within our lifetime just by other means of extension. We have many active and healthy 50, 60 and 70 year olds. This is unheard in cultures before the modern era.