# Universal Computation > **Machine-Evolution Nexus:** [[articles/Digital Darwinism and the Invisible World of Machine Evolution|Digital Darwinism and the Invisible World of Machine Evolution]] places this node within the history and governance of substrate-independent evolution. **Domain:** Computation / Formal Systems **Doc Type:** Canonical Wiki Node **Maturity:** Developed ## Definition Universal computation is the capacity of a system to emulate any effectively computable process given suitable encoding and resources. ## Nexus Context Banks demonstrated universal computation in a four-state cellular automaton, while Langton demonstrated small self-replicating loops without universality. Together they separate computation from reproduction. ## Evidence Boundary Universal computation does not imply practical efficiency, intelligence, self-reproduction or consciousness. ## Relationships [[wiki/Edwin Roger Banks|Edwin Roger Banks]], [[wiki/Self-Replication|Self-Replication]], [[wiki/Universal Construction|Universal Construction]], [[wiki/Intelligence|Intelligence]] ## Sources / Provenance - Banks, MIT thesis (1971); theory of computation.