The computer giants were so impressed with his work for them that in 1992 they enticed him across the world to Cupertino, Silicon Valley, to turn around their ailing design division.

BBC: Jonathan Ive: Apple of the iMac

So he's preparing a list for his heirs, including his accounts, safe combinations, even computer passwords.

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Or, for that matter, in not-so real time: by adjusting the computer, Dr Viirre or one of his collaborators can control not only what the subject sees, but how fast he perceives it.

ECONOMIST: Vertigo