The most menacing of these is that posed by archrival Samsung, whose windfall profits from sales of memory chips and huge internal demand for advanced logic chips for Samsung-brand electronics products like smart phones give it sizeable advantages in the form of both financial firepower and in-house vertical integration.

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The horrible internal conflict between emotion and logic that confronts every new mother returning to work strikes me as one of the unfair circumstances our biology and modern age impose on women.

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Sargent, in particular, was concerned with the internal consistency of economic models: the results had to follow, with unbroken logic, from first principles.

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While open skies would undoubtedly help to clear transatlantic excess capacity and liberalisation between America and Europe would help to guide the logic of the marketplace worldwide, it must be preceded by better internal-market regulation.

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In simplistic terms, that user-friendly software did the same for logic engines what automatic transmissions, power steering and power brakes did to tame the internal combustion engine and launch the age of the automobile.

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Admittedly, this unusual memory requires an internal light source, but the amount of illumination required is tiny and consumes less power than the logic circuits that are used to read data in and out.

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