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In evolution, large-scale changes that involve the origin of complex new traits occur gradually, in a broad sense of the term. This principle applies to the origin of subjective or felt experience. I respond to difficulties that have been raised for a gradualist view in this area, and sketch a scenario for the gradual evolution of subjective experience, drawing on recent research into early nervous system evolution.
Peter Godfrey‐Smith (Wed,) studied this question.
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