The most important job of a startup in the early stages is figuring out product/market fit. Turns out that this is much, much harder than it sounds like. You know the basic story:

-     Entrepreneur has a great idea for an unsolved problem to fix

-     They envision what they think needs to be done to fix it

-     They built that product (BTW – when we say product, it could be either a product or a service)