But Sullivan, who saw himself as an artist in touch with nature, had a third idea of function.

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But, strangely, because software is really a form of idea rather than mechanical function, the patented software is not strictly limited to the original hardware implementation it was conceived for.

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The idea is this: Kalydeco works by improving the function of the Cystic Fibrosis Transmembrane Regulator protein.

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At least 100 of the genes are a complete mystery to science - we have no idea what function they support.

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