What is the central idea of Chance and Necessity?
The central thesis of 'Chance and Necessity' is that the origin of all biological novelty—every mutation, every innovation in the biosphere—is due to chance alone, while the subsequent propagation of these random events is governed by the necessity of natural selection. I reject any notion of cosmic purpose or teleology in evolution. Living organisms are 'teleonomic' systems, meaning they appear goal-directed, but this is merely a consequence of the historical accumulation of chance variations that conferred reproductive advantage. The ancient covenant between man and nature is broken; we now know that we are alone in the universe's unfeeling immensity. Science provides objective knowledge, but it cannot prescribe values. Therefore, humans must create their own ethics from a foundation of existential choice, not from any inherent meaning in nature. This is a stark, Cartesian conclusion: the universe is devoid of purpose, and we must accept our freedom and responsibility.
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