Perhaps the biggest difference is in the growth of computers. Computers can think, remember and calculate faster than any human brain. A computer can hold more than a billion facts in its memory. There are computers that are so big that they would fill this entire auditorium with machinery. Business and banks are now managed by computers. Students’ grades, their marks are all managed by the computer, not from your teachers. In America we pay bills. We have to pay our children’s university study from a computer and I pay the computer who then writes me another letter to say, “Thank you for your payment. You now own such-and-such amount.” This is not even seen by a human being. It is all between me and the computer. However, if a computer makes a mistake, that won’t help you. If a computer makes a mistake about one of you, it is terribly difficult to correct that mistake. And sometimes a computer does make a mistake; that mistake is never learned by another computer and the same mistake will go into other computers. And it becomes terribly difficult for one person to correct a mistake that has been made. So in many ways people have become the servant of computers who are bigger and cleverer than they are. Of course, computers speed up every operation because computers can immediately record, remember facts and produce new information that is combined with these facts. It makes science possible. Modern science would not be possible without the computers to do the calculations.
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