His conjecture, made in 1904, was that in this four-dimensional world, all closed three-dimensional surfaces that are simply connected could be transformed to look like a three-dimensional sphere.

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Unfortunately, the processing required to perform the integration of all 51 two-dimensional images into a three-dimensional one is so demanding that the computers Dr Kanade has available take five days to produce ten seconds-worth of video.

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They are the simplistic, one-dimensional metrics we all know: pageviews, time on site, uniques.

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Artists, he says, rely on our proneness to visual illusions arising out of the fact that all perception involves unconscious inference, as when a two-dimensional retinal image is translated into a three-dimensional perception.

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Kay wants to take computing forward with his next great invention, an operating system that puts the user in a three-dimensional graphic world with scores of other users, all computing collaboratively and communicating through audio and visual messaging.

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"It's a long way to go, and is like a combination of playing three-dimensional chess and bridge and trying to run a NASA space programme, all at the same time, " he added.

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He was so one-dimensional in his quest to break golf records and to be known as the best golfer of all time.

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