Validate a digital product or online store before spending on ads

Editorial follow-up: decide what would change your mind
Before testing a product idea, write down the assumptions that must hold: who needs it, what task it solves and what effort delivery requires. Add a practical stopping or revision condition.

For example, repeated inability to complete the intended task may mean the prototype needs redesign before any sales test. Defining that condition early reduces the temptation to reinterpret every compliment as proof that the original idea should continue unchanged.