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> It occurred to me today that your review of Talbott mysteriously left out a comment on his huge section discussing fitness, and the inability to define it. Since in this discussion somewhere, recently, and I can&apos;t find your quote, you pointed out very rightly that the Darwin theory depends on the concept of survivability, I wondered why you skipped commenting on that aspect of Talbott&apos;s critical points. We know that what is &apos;fit&apos; is then supposed to &apos;survive&apos;, and you have admitted, rightly so, that the whole concept is a tautology.-I am not sure that the basis of evolution is survivability. And that is why the Darwinian attempts to quantify fitness may be so important to them but not to me. I look at the obvious drive for complexity, the appearance of advances in complexity without a driving necessity, and with a possible IM producing a bush of living weirdness with some of the strange lifestyles I&apos;ve shown in natures wonders, and Darwin&apos;s theory may not be on the mark. Is life in competition with itself and the environment the only reason for evolution? I strongly doubt it.