Can You Compute?
Created by pioneering mathematicians and engineers during times of political unrest and war, computers are more than electronic machines. Underneath the myriad complicated circuits and software glows a mathematical purity that is simplicity itself. The maths at the root of computers illuminates the nature of reality itself. Today explorers of the impossible still compete to find the limits in our universe. With a revolution in mathematics and technology and a million dollars at stake, who can blame them? . . . It was 1926 and the General Strike was taking place in England because of disputes over coal miners’ pay. There were no buses or trains running. Fourteen-year-old Alan Turing was supposed to be starting at a grand boarding school: Sherborne in Dorset. Yet he was living in Southampton, some sixty miles away. Many children would have simply waited for the ten-day strike to finish and have a longer holiday. Not Turing. He got on his bike and began cycling. It took him two days, with a stay in a little hotel halfway, but young Turing made it to his new school on time. Turing’s independence may have stemmed from the fact that he and his older brother John had seen little of their parents while growing up. Both parents were based in India, but decided their children should be educated in England. The boys were left with friends of the family in England until their father retired and returned in 1926—just as Turing made his way to the new school. It was an impressive start, but Alan Turing didn’t do very well at his new school—he never had in any previous school. His handwriting was terrible, his written English poor. His English teacher said, ‘I can forgive his writing, though it is the worst I have ever seen, and I try to view tolerantly his unswerving inexactitude and slipshod, dirty, work . . .’ The Latin teacher was not much more approving. ‘He is ludicrously behind.’ The problem was that Turing didn’t pay attention to the curriculum being taught. Instead he spent more time following his own interests.