The River and the Canal

You On AI traces intelligence from hydrogen atoms through chemical self-organization through biological evolution to artificial computation, presenting each stage as a widening of a single continuous flow. Thompson's framework — specifically the life-mind continuity thesis — suggests that this genealogy conceals a critical discontinuity. The river of mind flows from the first autopoietic cell through every elaboration of embodied sense-making. The transition from chemistry to biology — the emergence of the first self-maintaining systems — was the emergence of a new kind of process, a process that generates its own significance, that has an inside, that has stakes in its own continuation. Artificial computation does not reproduce this transition. It creates a canal: a powerful artificial channel that carries water from the same landscape but does not have its own springs. The metaphor is Segal's own, offered in the Epilogue as the concession the enactive framework forced him to.