They keep the PC patched, keep its disk drive in good order, make sure its drivers are up-to-date, and generally make it run smooth as silk.

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You place in front of them a billion pound carrot of borrowing powers - a golden carrot, if you like, but on condition that Silk or a broad swathe of it is implemented - and you make that explicit deal very public in advance.

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Hagfish slime has many similar qualities to spider silk, but has one big advantage, says Fudge - the proteins that make it up are far smaller, and so easier - in theory - to replicate.

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