Britain's National Air Traffic Service suffered a "technical fault" yesterday which resulted in hundreds of flights being cancelled or delayed. I am old enough to remember when everything was accomplished by human beings with just a little bit of, what now seems primitive, mechanical help. Thing is back then if something went wrong human beings would sort it out on the spot using their own intelligence. Nowadays, if I go into a shop and the computer is down they cannot serve me. They cannot take my money and give me my shopping. They just stand there looking useless and apologising for the inaction of the collection of microchips and circuitry that now rules their lives - all our lives.