Just Try It

To succeed, the team needs to make decisions effectively as a team. This requires discussion, but not as much as most groups think. Whenever a design discussion takes more than about 10 minutes, it´s time to run an experiment. It´s important to be clear about what you´re suggesting: the idea isn´t to build two systems, then pick the better-designed one. Instead, we agree to admit when we´ve stopped arguing on the basis of evidence and instead have descended into pontification and supposition. Sometimes, to evaluate an idea, we have to try it for a while.