Experiment

Experiment

Pick me, if you have a solution in mind, but haven’t tested it with the right people and gathered their feedback and thus validated the solution.
Value proposition

Value proposition

Pick me, if you have a solution in mind, but can’t answer questions such as what product or service are you developing, for who are you developing it, and what exactly does it solve for those people?
Assumptions

Assumptions

Pick me, if you have a solution in mind, but haven’t thought of any of the underlying assumptions you have on the solution.