The author has pointed out that we come to know about new things and activities, moreover, learn how to use them but when we stop doing those activities or using those things we begin to forget how to do those activities with perfection and how to use those gadgets as we used to do earlier.
It is not an important issue for a person in old age what he still can do, the important thing is that he/she should not give up. He/she should not be a burden on others. I would recommend you to watch an old movie of Rajesh Khanna and Shabana Azmi- Avatar. It depicts real picture of our society in which Rajesh Khanna becomes an icon for all old people. He encourages them never to give up and keep on working and learning new things.
Knowledge is power.