Pat Flynn's framework, from Superfans, pp. 201 to 204.
Mission Design
Check the idea fits your goals.
Development Lab
Uncover details about the idea.
Flight Planning
Assess current market conditions.
Flight Simulator
Test with a small segment of the target market.
All Systems Go
Do a final analysis before moving forward.
From chapter: Let Go: My Unexpected Path from Panic to Profits and Purpose, pp. 201–204
Promotional pages for Flynn's earlier books. Let Go is a memoir about moving from a layoff to a thriving online business, and Will It Fly? is a set of tests for validating a business idea in five parts before spending time and money.