Notes on product decisions
Notes on product, platforms and applied AI. What the research shows, and what happens when it meets practice.
- 28 October 2026 · Loyalty · 2 min readWhat loyalty programmes change, and for whomPoints are easy to give away. Studies of real programmes show which mechanisms move behaviour, and why the heaviest buyers are the wrong place to look for impact.
- 20 October 2026 · Product management · 2 min readWhy roadmap dates should be rangesResearch on the planning fallacy explains why single-date roadmaps slip. It also points to what helps: forecasting from past projects.
- 12 October 2026 · Applied AI · 3 min readGenerative AI at work: what the field experiments showWriters, support agents, consultants: three studies with control groups in Science, The Quarterly Journal of Economics and Organization Science. Large gains on the right tasks, real losses on the wrong ones.
- 27 April 2026 · Product management · 2 min readA product roadmap that can say noA roadmap is a strategy document that happens to contain dates. The moment it turns into a feature list with quarters beside it, it stops doing its job.
- 20 April 2026 · Analytics · 2 min readA/B testing: what it takes to trust the resultAn A/B test is easy to describe and easier to get wrong. Four steps keep it honest, and a checkout test at Modanisa shows what they are worth.
- 12 April 2026 · Agile · 2 min readAgile and Scrum from a product manager's seatAgile is a mindset, and Scrum the most common way to practise it. Whether either works comes down to who owns the product decisions inside the framework.