Definitionv1
Bedrock information: knowledge with a half-life of decades
Bedrock information: knowledge with a half-life of decades to centuries that consists of foundational principles, mental models, and first principles that remain relevant across time, such as human psychology and mathematical principles
Why This Is a Definition
This definition clearly names 'bedrock information', places it within the genus of knowledge types, and distinguishes it through its specific differentia (half-life of decades to centuries) and functional characteristics. It precisely differentiates bedrock from flash and cycle by temporal scope, relevance, and foundational nature.