While a skydiving coach in the 1990s, he rigged up a primitive computer simulation of dives and dive formations.

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They hid a primitive computer in their shoes that could predict where a ball would land on a roulette wheel.

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Though the display resembles a primitive computer game in its blockiness, Dexter Turner, the president of Op Technologies, a rival firm that is developing a similar system, points out that this is quite adequate.

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He was also developing another interest: in 1982, he bought his first computer, a somewhat primitive Timex Sinclair that he hooked up to a black-and-white TV.

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