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Eliezer_Yudkowsky comments on Evolutions Are Stupid (But Work Anyway) - Less Wrong

34 Post author: Eliezer_Yudkowsky 03 November 2007 03:45PM

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Comment author: Eliezer_Yudkowsky 04 November 2007 04:12:24PM 1 point [-]

What fraction of the population must have the gene for it to be considered "fixated"; absolutely each an every member?

In the equations, yes, I believe that's what's being calculated.

If this seems extreme, consider a complex machine like an eye, which probably has at least 100 genes, maybe 1000 if you count the supporting visual areas of the brain, and imagine that each gene is independently at 99% frequency in the population.

But yes, you could overlap to some degree in the evolution of complex machines; there'd be significant pressure for B once A was 50% frequent. I don't know off the top of my head how to calculate time to 50% frequency.