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Message: <blockquote data-quote="Desdichado" data-source="post: 2689380" data-attributes="member: 2205">I imagine that's so if you're not really very familiar with the theory of evolution and how it is proposed that evolution works.Granted, keep in mind that it is still a theory, without firm confirmation, and therefore the details of the model may change as more information is discovered, etc.  But this is how the model works currently.Evolution has no "plan" it cannot, as a matter of fact, proceed according to a plan.  Nor is it a broad, trend-like change that affects and entire population.  Evolution--according to the theory--occurs when a random mutation in a single individual is passed on to it's heirs.  This random mutation is generally supposed to give those who have it an "evolutionary advantage", so it therefore becomes dominent either because those who have it monopolize breeding populations and therefore pass on the change, or they literally replace those who don't have it because they "outcompete" those without it, and the more primitive, unmutated form goes extinct.That's the highest level snapshot of the model, but keep in mind that such developed traits may or may not actually be an "evoluationary advantage"--they could be "evolutionarily neutral" yet still dominant so that they end up spreading.  There may not be any direct head-to-head competition either, other circumstances can lead to extinction, and subsequent repopulation by more derived (or even entirely new) forms.But, since the model is predicated on evolutionary change starting with a single individual and thus spreading through the population by either diffusion or replacement of genes, the entire premise of the show you watched is flawed from our understanding of evolution.</blockquote>

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