The opportunity
Is there a real problem, a real market, and a real profit in this?
Turn an idea into a tested opportunity: define the problem, size the market, prove the economics before you build.
Built from Ch 2, App B of the handbook, updated by the 2026 research (S10).
5 tools
Market evaluation worksheet
The ten questions that turn an idea into an opportunity. Answer each one, say how confident you are, and write down the test that would settle it.
quizOpportunity scorecard
Five characteristics separate an opportunity from an idea: value, risk-adjusted profit, fit, durability and financeability. Score yours against all five.
calculatorRisk and return line
Higher risk has to buy higher return. Plot what you expect to earn against the risk you are taking and the safe rate you could have had instead.
calculatorBreakeven calculator
How much you must sell before you earn anything, and what each sale is worth after that. The first number every founder needs.
quizWhich level of product-market fit are you at?
Product-market fit is not a switch. Score satisfaction, demand and efficiency to find your level, and learn what that level says you can safely ignore.
Stuck on something specific?
Ask the adviser. It answers only from the handbook and the 2026 research, tells you which source each answer came from, and says so plainly when the research does not cover your question.