# Deep Time > **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:** Evolution / Earth History / Scale **Doc Type:** Canonical Wiki Node **Maturity:** Developed ## Definition Deep time is the immense geological and evolutionary timescale across which planetary and biological change becomes legible. ## Nexus Context The article pairs it with computational scale: processes can be invisible because they are too slow, large, distributed or numerous for ordinary observation. ## Evidence Boundary Scale limits observation but does not license inference without instruments. Records, models and provenance are required to distinguish real processes from narrative projection. ## Relationships [[wiki/Fossil Record|Fossil Record]], [[wiki/Scalar Nesting|Scalar Nesting]], [[wiki/Evolutionary Dynamics|Evolutionary Dynamics]], [[wiki/Technical Archaeology|Technical Archaeology]] ## Sources / Provenance - Geology and evolutionary biology; nexus synthesis.