The 1 Line Description
When to use it
#1) Humbly accept the uncertainty in your assumptions
Almost no-one starts out with the right product. It's your job to put your assumptions to the test as rapidly as possible.
#2) View customer interviews as experiments
Your customer persona's are just guesses, based on how you view your customers. Interviews help us to put these guesses to the test.
#3) Clearly defined assumptions fuel rapid learning
Good science involves making predictions before running an experiment. The predictions are based on your assumptions, which are just guesses.
The more clearly you can define your assumptions & predictions, the faster you'll learn.
Customer Persona templates & Canvases help to make explicit the assumptions which matter most.
#4) Discovery interviews are for you to learn, not to sell!