The citation said the winners' contributions had not only changed the way we communicate but had spawned many new industries.

BBC: Internet pioneers win engineering prize

Jobs did this, with varying degrees of self-restraint in his involvement, with the Lisa, Macintosh and iPod projects, at least, and in each case not only changed the technical worlds of which they were a part, but also launched the careers of the next generation of innovation leaders in the industry.

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He was often exasperated by the inconsistencies in Keynes' work and his tendency to change his mind - something the Cambridge economist did quite regularly, and not only "when the facts changed".

BBC: Masters of Money: Friedrich Hayek