The document is from Cowan Publishing and discusses the process of science and experimentation for startups in Tanzania. It explains that science involves recognizing a problem, collecting data through observation and experiment, and testing hypotheses. It then outlines several steps for startups to vet ideas through small, corrective experiments rather than large plans, organize hypotheses by outlining assumptions and tests, focus on validating assumptions through customer feedback, make sure to periodically check progress on metrics, and conclude with deciding whether to pivot or persevere based on learning. The document encourages learning from short cycle experiments to allow for quicker success.