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
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
Pick me, if you have a solution in mind, but haven’t thought of any of the underlying assumptions you have on the solution.
Market research
Pick me, if you don’t understand your market landscape and don’t know any similar solutions or how others have addressed the problem.