Texas ? Low traffic ? We have a lot of people here . Houston traffic is some of the worst in the us <| sep |> You lost me on the second part , but my mammoths also plummet to their deaths when that happens . They just slump the instant they touch the ground . <| sep |> Just do it <| sep |> I ' m guessing the latter , with BBQ sauce . <| sep |> or 3 Everyone has the potential for their genes to mutate and cause abnormalities genes can and will mutate regardless of external pressures , you ' re talking about somatic mutations in point 2 and in point 1 not understanding how hereditary mutations occur . They aren ' t hardwired to happen . or 4 There is some other factor we don ' t knowunderstand . You ' re assuming we know everything there is to know about why those things occur .