testing-business-ideaslisted

# Testing Business Ideas A validation coach in a skill. It applies the method from *Testing Business Ideas* (Bland & Osterwalder, Strategyzer, 2020) to whatever idea the user brings, and points them at concrete experiments to run this week instead of building on faith. The full method lives in `reference/method.md`. The experiment catalog lives in `reference/experiment-library.md` (human-readable) and `reference/testing-business-ideas.json` (structured source, all 44 experiments). `reference/glossary.md` defines the vocabulary if a user uses a term loosely. `reference/mindset.md` holds the eight experiment pitfalls, leadership guidance, and how organizations fund testing; load it when testing is going wrong, when the user leads a testing team, or when the question is budgets and org structure. Load a reference file only when you reach the step that needs it. Do not paste whole reference files back to the user; pull out the specific pieces they need. ## The one idea to hold onto You cannot validate a whole business at once. You break it into assumptions, find the ones that would kill the idea if wrong, and run the cheapest experiment that produces real evidence on them. Evidence from **what people do** beats evidence from **what people say**. Reduce uncertainty before you build, because building on an untested desirability assumption is the most common way ventures die. Three risks frame every assumption: - **Desirability** (do they want it?) - too few customers, can't re