In general, I definitely agree with this post. Though I put little trust in Donald E Brown, my concerns aren’t relevant here. Slightly relevant is the fact that it seems conceivable that the complex functional adaptations of humankind are so numerous and so complex that we exist at an equilibrium where more critical adaptations appear in almost everyone but significant adaptations exist which are less critical. Genes necessary to those adaptations might break regularly and not be weeded out by selection quickly. If such adaptations are numerous, most people might be missing several. Other adaptations might require, as vision does, environmental conditions that are reliably present in the ancestral environment but which may not be so reliably present today in order to emerge.
In general, I definitely agree with this post. Though I put little trust in Donald E Brown, my concerns aren’t relevant here. Slightly relevant is the fact that it seems conceivable that the complex functional adaptations of humankind are so numerous and so complex that we exist at an equilibrium where more critical adaptations appear in almost everyone but significant adaptations exist which are less critical. Genes necessary to those adaptations might break regularly and not be weeded out by selection quickly. If such adaptations are numerous, most people might be missing several. Other adaptations might require, as vision does, environmental conditions that are reliably present in the ancestral environment but which may not be so reliably present today in order to emerge.