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>DNA and protein are far too complex to have existed at the beginning of
>life. Check out *Seven Clues to the Origin of Life,* by A. G.
>Most likely, the original organisms were based on clay crystals rather than
>nucleic acids. Later, when the framework was in place, the clay was
>gradually replaced by the more efficient nucleic acids.
>You seem to be suggesting a vitalistic conception of life based around
>complexity. The "elan vital" that animates living things is their
>complexity. Life is a product of molecular complexity, while consciousness
>is a product of neural complexity. If this were true, machines would
>to life once we've sufficiently complexified them.
>I'm afraid it's not that simple.
Another good book on the beginnings of life is Vital Dust: Life as a Cosmic
Imperative by Christian de Duve, Nobel Laureate.
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