The class Insecta with its distinctive segmentation goes back at least 400 million years to the Silurian period. It gives the impression of a creative personality at work in a lab. He hits on a design he likes and sticks with it.
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"Facts alone are insufficient to destroy a conspiracy theory, of course, and in many ways a theory's appeal has more to do with the receptiveness of its audience than the accuracy of its details."
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A team of scientists carefully examined genomes of a butterfly and a silkworm. What they found was interesting, but dubious as an example of evolutionary ancestry.
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"Are scientists a cohort without a sociology -- uniquely homogenous and unanimous, without factions or interests and impervious to peer pressures or the agendas of funding agencies?"
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The question of what parts in any complex system are essential for its key functions, or indeed its very existence, is one of the most interesting puzzles in engineering and biology.
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