Title: Sprint: How to Solve Big Problems and Test New Ideas in Just Five Days

Authors: Jake Knapp; John Zeratsky; Braden Kowitz

Publication date (EN): March 8, 2016 (Simon & Schuster)

Pages (EN): 288 (hardcover).

Value for PMs & founders (problem it solves)
A time-boxed, five-day playbook to de-risk big bets: assemble a small team, build a realistic prototype in one day, then test with five target customers before you commit to code, budget, or roadmap.

Summary
Monday (map & target), Tuesday (sketch), Wednesday (decide & storyboard), Thursday (prototype), Friday (1:1 customer tests). The method—born at Google and refined at GV—mixes design thinking, strategy, and research into a repeatable checklist. 

3 community-reported takeaways (with sources)

  1. Prototype + five interviews in a week → fast evidence before building. Shortform

  2. Structured decision-making (Note-and-Vote, Decider) beats open-ended debate and speeds alignment. GV Library

  3. Sprints pay off even when they reveal flaws—you avoid costly builds. Medium

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