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Sticky problem

But there is a problem with the idea of this kind of nanobot. You can't just miniaturise machinery from our world and expect it to work in the same way on the nano-scale.

'The parts would be constantly flexing and jiggling about, jerked here and there by jolts of all kinds. Whenever they touched, they would tend to stick together. Soon the whole machine would grind to a sticky halt.' Richard Jones, author of Soft Machines.

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Professor Richard Jones
Professor Richard Jones
Image: Richard Jones

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