Here I am writing with chalk on blackboard in 1953. Now I am “writing” on a keyboard on a computer about to “publish” my thoughts on a blog which will go out on the internet. There is not a single noun in the preceding sentence which I could have understood in 1953.  Well, maybe “thoughts.” I look very thoughtful here.

I was reminded of how swiftly things have changed when my seven year old grandson was examining a turntable.

“What is this thing? What do you put on it? How does it work? Do you pick up this lever(the arm) and put it down again? Does it go around?”

I tried to explain the whole thing to him. When I was done he remarked, “Boy, that’s some technology!”