Reading a blog about computers and computer programming today I suddenly remembered an incident that happened over forty years ago.
I didn’t know how they worked and I was just starting college. I went in an exhibition about information technology. I saw on a computer screen a message which said something about typing the answer to a question and it would then play a game.
I typed in the answer, nothing happened. I did it again and again, nothing? The original question disappeared off the top of the screen….frustrated I gave up.

There was no-one there to explain what had happened. There was no one there to tell me you had to press enter!