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Innovation and evolution I: Speciation rates and innovation rates

As we explore analogies between innovation and evolution, there are some concepts that present intriguing questions. The idea of a speciation rate is one of these concepts and it allows us to ask questions about the pace of innovation in new ways.

Are speciation rates constant or rugged? That is: should we expect bursts of innovation at certain points? Cambrian explosions seem different from purely vertical evolution, from single cell to multi-cell etcetera.

Are speciation rates related to extinction rates? Will increases in extinction rates trigger increases in speciation? If these are entirely decoupled in a system it will have states with high extinction / low speciation that can be existentially threatening if they persist for too long. And what is extinction in innovation?

Are there measures of technical diversity alongside biological diversity and if so what it is that these measure?

Food for thought.

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