CONCEPT
Substrate Independence
The principle that replication, variation, and selection operate on information regardless of physical medium — genes in DNA, memes in neurons, patterns in silicon.
Substrate independence is the claim that the logic of Darwinian evolution does not depend on any particular material implementation. What matters is the functional property: can the substrate support copying, variation, and selection? If yes, evolutionary dynamics will operate. DNA happens to be Earth's first successful replicator, but the principle admits neurons (for cultural evolution), silicon (for computational evolution), and any future substrate meeting the criteria. Dawkins has defended this view consistently since the 1970s, arguing that consciousness, intelligence, and life itself are substrate-independent properties — implementable in principle on any physical system with the right causal organization. The implication for AI is direct: there is no principled reason to deny that computational substrates can support genuine intelligence, consciousness, or agency, provided the system replicates the relevant functional operations.
In The You On AI Field Guide
The strongest defense of substrate independence comes from the failure of vitalism — the discredited doctrine that living matter possesses some non-physical élan vital distinguishing it from non-living matter. Twentieth-century biology systematically eliminated vitalism