You wrote: "Give a seventy-years-old the same gadget and he’ll figure it out after you show him."

I am 77 years of age, 78 this year. The above staement not quite true. I have a 3 year old grandson who is inquisitive but learning. I also am inquisitive and learning. That is the trick as you age. ALWAYS stay inquisitive and learn. Too many people once they reach 60, 70 or 80 give up.