# Ivy Mike > **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:** Nuclear History / Computation **Doc Type:** Canonical Wiki Node **Maturity:** Developed ## Definition Ivy Mike was the first full-scale thermonuclear-device test, conducted by the United States at Enewetak Atoll on November 1, 1952. ## Nexus Context Numerical work in the IAS-computer lineage supported thermonuclear calculations shortly before Barricelli used the same machine for artificial evolution. ## Evidence Boundary The machine’s involvement is an infrastructure history, not a claim that Barricelli’s runs directly used weapons code or data. ## Relationships [[wiki/IAS Computer|IAS Computer]], [[wiki/Los Alamos National Laboratory|Los Alamos National Laboratory]], [[wiki/Nils Aall Barricelli|Nils Aall Barricelli]], [[wiki/Infrastructure as Power|Infrastructure as Power]] ## Sources / Provenance - U.S. Department of Energy nuclear-test history; IAS computer histories.