Most people Gareth encountered while he was sleeping on the streets were kind, but he says some made critical comments and stole his possessions in the night.
Today's actuators, even the state-of-the-art ones, are still largely made from metals, hard plastics and electronics. But there are other ideas around. Tolley and his colleagues have been working on a very different approach.
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Psychology and biology offer one way of thinking about "The One", but mathematics puts forward another.
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