Ever since Darwin tied knots between human beings and the rest of the animal world, many people have frantically attempted to untie them again, decla… - Richard Leakey

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Ever since Darwin tied knots between human beings and the rest of the animal world, many people have frantically attempted to untie them again, declaring that even though our roots are in the animal world we have left them so far behind as to make any comparisons utterly meaningless. To some extent this is true, because the quality that makes us unique in the biological kingdom is the enormous capacity to learn.