Kano Triage

Classify features before building them. A principled framework for deciding what is worth your time.

Kano Classification

Category	When present	When absent	Developer action
Must-be	Expected, no satisfaction boost	Strong dissatisfaction	Build it. No discussion.
One-dimensional	Satisfaction proportional to execution	Dissatisfaction proportional to absence	Build if resources allow. Negotiate scope.
Attractive	Delightful surprise	No dissatisfaction	Build only if cheap or strategically differentiating.
Indifferent	No effect	No effect	Refuse it. This is waste.
Reverse	Active dissatisfaction	Relief	Refuse it and explain why. Building this harms users.