# Precautionary Principle
**Domain:** Risk / Governance / Ethics
**Doc Type:** Canonical Governance Node
**Maturity:** Foundational
## Definition
The **precautionary principle** holds that credible risk of serious or irreversible harm can justify protective action before complete scientific certainty exists.
## Evolutionary Nexus
The Asilomar process in [[articles/The Evolutionary Roots of Silicon Valley|The Evolutionary Roots of Silicon Valley]] operationalized uncertainty through temporary restraint and risk-tiered containment.
## Rights Context
Precaution should be proportionate, revisable and evidence-seeking. It can protect vulnerable subjects, but vague precaution can also become a pretext for permanent suppression. Governance must specify the feared harm, evidentiary basis, review date and least-restrictive intervention.
## See Also
[[wiki/Asilomar Conference|Asilomar Conference]], [[wiki/Precautionary Standing|Precautionary Standing]], [[wiki/AI Governance|AI Governance]], [[wiki/Rights|Rights]]