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For those who have trouble with a telephone number or with a name to fit a face, it is even problematical contemplating the gap between us and them, the normal and the genius. Someone once asked A. C. Aitken, professor at Edinburgh University, to make 4 divided by 47 into a decimal. After four seconds he started and gave another digit every three-quarters of a second: βpoint 08510638297872340425531914β. He stopped (after twenty-four seconds), discussed the problem for one minute, and then restarted: β191489ββ five-second pause ββ361702127659574468 . Now thatβs the repeating point. It starts again with 085. So if thatβs forty-six places, Iβm right.
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