What is cognitive errors?

Example: A startup founder raises $2M to build a product based on the schema 'enterprise buyers prioritize features over simplicity.' Every design review, every sprint, every hire optimizes for feature density. Eighteen months in, every lost deal cites the same objection: 'too complicated.' The schema was wrong from day one, and every dollar spent since then compounded the error. The cost wasn't just the money — it was the eighteen months of organizational momentum pointed in the wrong direction.

This concept is part of Schema Foundations in the How to Think curriculum, which builds the epistemic infrastructure for schema foundations.