The text is from the book Sprint: How to Solve Big Problems and Test New Ideas in Just Five Days by Jake Knapp, John Zeratsky, and Braden Kowitz. 

This book details a structured, five-day process called a "sprint" for teams to quickly validate ideas and solve critical business problems. 

It outlines the sprint methodology developed at Google Ventures, including key steps such as mapping the problem, sketching solutions, prototyping, and testing with real users. 

The authors use examples from various companies to illustrate how sprints can be applied to different challenges, from software development to marketing strategy. 

The book provides practical advice, checklists, and tools for running effective sprints and making informed decisions. 

Ultimately, the book encourages a prototype mindset, which prioritizes learning and experimentation to reduce risk and fast-forward to the future.