Consciousness evolved in two steps. First, living systems internalized Darwinian fitness as a self-estimated fitness, creating a feedback loop that generates intrinsic meaning. Second, animals with advanced nervous systems evolved a form of communication that alters how each partner estimates fitness, producing subjective experience as a primary consciousness. This primary form then generates more complex consciousness—of the natural and social worlds, self, and language—partly through internalized dialogue.
Purpose and meaning appear absent from the physical world and natural sciences, yet are essential for understanding mind and culture. Darwinian evolution produces only apparent goals. Using evolutionary models, the author shows that a slight, evolvable extension—targeted modulation of mutation rate, known to exist in biological cells—can produce genuine goals. This gives rise to intrinsic meaning and the ability to initiate goal-directed chains of causation (active causation). The mechanism uses randomness modulated by a feedback loop regulated by evolutionary pressure. Extending the scheme to behavioral variability shows how freedom of behavior is possible, and further extension to communication suggests active exchange of intrinsic meaning between organisms may be the origin of consciousness, providing a physical basis for free will.