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  • Aaron Wolfson thinks this is interesting:

Lean replaces traditional user stories that can be declared “done” by a product owner with User Hypotheses that can be validated or invalidated. In other words, a feature isn’t finished when it’s shipped to a user. A feature is often simply a method of validating whether allowing a new customer behavior is good or bad for the business.

From

Cover of UX for Lean Startups

Note

Shipping features isn't success. Making customers happy is success.