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Part of why it may not be true is that we lack the language or conceptual vocabulary to describe how living systems really work.

When we engineer things, it's one-part-one-function. Living systems are every-part-every-function network graphs with weighted edges that are subject to dynamic reconfiguration.

A cell isn't a computer that runs "code" in the form of DNA, nor is it a "machine" as we understand it. A "structured cloud of probabilistic quantum interactions among molecular nanomachines" is a bit more accurate.

Until we conquer these meta-problems, we won't understand the cell or the genome. I don't think they can be understood classically -- and I don't mean classically in the sense of omitting quantum mechanics. (Though that's true too.) I mean classically in the sense of linear fixed-relationship cause and effect machines.

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