Why use the Test Card?
Each Business Model element, which has not been confirmed with potential users or customers is a business hypothesis. Testing an idea involves designing experiments confirming the hypotheses.
However, there is no point in conducting experiments, if you are unable to learn from them and do not utilize the acquired information. The Experiment Sheet is a kind of a guardian, who makes sure that you record your findings, the resulting conclusions and planned actions in the course of every experiment, which can later streamline the business model.