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I teach the learning science behind why people get stuck, and how to fix it.

From the latest video

Find where your product loses people The people who churn don't tell you why. I find the exact place your product loses them, and because I work in the code, I can fix it there. Product design analysis →

Ask me

Ask a question about your product, free I answer the good ones in public, in videos and sometimes on a webinar or a podcast.

Work with me

Product design Where your product loses people, and what to fix first. Vibe check You built an app with ai. Before real users or real money go on it, I tell you what to fix first. Security A pentest full of findings and a deal waiting on the fixes. I turn the report into a plan your engineers can start Monday. See a sample report The same made-up app analyzed at three levels, so you can see what each one gets you.

Learn and read

Guidelines for your ai tool Give your ai tool these once, and the sites it builds stop shipping the defaults that lock people out. Playground Test a made-up app for accessibility, security, and product problems. Surprise Product Owner A short, unhurried course for the person who just became a product owner. The Iterative Leader Writing on leading teams, building products, and being the human in the loop.

My other work

The Intelligent Hoodlums For teachers: professional learning, free webinars, and courses. Understory Collaborative For leaders whose software project keeps slipping. Dog stuff I recommend The gear I use with two reactive herding dogs.

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