# Peer Review > **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:** Scientific Institutions / Epistemology **Doc Type:** Canonical Wiki Node **Maturity:** Developed ## Definition Peer review is expert evaluation of scholarly work before or after publication to assess methods, reasoning, originality and relevance. ## Nexus Context The article uses peer-reviewed records to distinguish established demonstrations from interpretive extension, including Codd, Hutton, Avida and the 2026 evolvable-AI debate. ## Evidence Boundary Peer review filters claims but does not certify permanent truth. Reproducibility, implementation, later correction and evidentiary scope remain necessary. ## Relationships [[wiki/Nature|Nature]], [[wiki/PNAS|PNAS]], [[wiki/Evidence Boundary|Evidence Boundary]], [[wiki/Scientific Inference|Scientific Inference]] ## Sources / Provenance - Scientific-publishing practice; cited journals and papers.