The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses · chapter 3 · id the-lean-startup-c3-05-ries-three-learning-milestones

“Ries' three learning milestones (establish baseline, tune the engine, pivot or persevere) provide a structured, repeatable process for validated learning that any startup can follow.”

contestedconfidence: medium⚠ extracted by pipeline, re-audit pending

Receipts

Camuffo et al. (2020), Scientific Entrepreneurship RCT, Management ScienceDOI registry: valid

Treatment group trained in hypothesis-testing had modestly better pivot rates but NOT better revenue or survival at 12 months. The specific three-milestone framework was not tested.

Toma & Gons (2021), Innovation Accounting: A Practical Guidesource alive

An entire book was needed to make Ries' learning milestones implementable, implicitly acknowledging the original description was too vague for practitioners.

McGrath & MacMillan (1995), Discovery-Driven Planning, HBRsource alive

Reverse income statements and assumption-to-knowledge ratios provided a more rigorous milestone framework for ventures under uncertainty 16 years earlier.

This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.