Your grandfather thinks that you are really stupid. He pretends that he does not understand what is happening around him. He compares the life he lived when he was young with the life the young generation lives today and he is filled with pity. Let’s get into his mind and see why he thinks that you are stupid.
#1 Your Modern Ways Are Unhealthy

You think that you have advanced in technology yet your technology makes you lazy and unhealthy. Walking is difficult for you. You park your car as close as you can to the entrance. When the escalator on a two story building is not working you would rather go away and come back on a day when it has been repaired.
When your grandfather was growing up, cars were not so common. People did not think walking was a form of exercise; it was a way of living. Your food is all processed so that it ends up with no essential nutrients at all. Then you spend all your money researching how to drop your blood pressure. This is the first reason why your grandfather thinks you are not as clever as you think you are.