How The Lean Principle Became Profound There are certain books that are required reading for product managers. Eric Reis’ The Lean Startup and Marty Cagan’s Inspired both come to mind. They’re great books with lots of useful techniques and important ideas. Lately, however, the fact that these books are popular and useful has struck me as rather odd. If you take a step back from these books — and the many books, articles, talks, podcasts, etc.
How Startups Can Do Better Cohort Analyses If you’ve ever looked at analytics for software products, you’ve probably run across a graph that looks like this: Graphs like this one depict cohort analyses.1 This particular graph is from Google Analytics. Apple also has one for app analytics. So does Fabric.2 Cohort analyses can be very useful. For example, Eric Reis, in The Lean Startup, recounts how cohort analysis helped his startup realize that their efforts at improving their product weren’t working: