Three Laws
Noun Phrase · Slang & Abbreviations
Definitions
A joking or serious set of core rules that supposedly govern a system, tool, or team. In engineering slang, invoking three laws usually means people are trying to compress hard-won lessons into memorable form.
In plain English: A compact set of core rules or principles.
Example: "By the end of the migration they had developed three laws of schema changes, all written in the scar tissue of prior mistakes."