Get the MVP in the hands of users early and try to learn from them how to make something that they want. Be open to the idea that while you might have figured out a good problem to work on - your solution is just a hypothesis to be tested and refined over time.
What do you do if a decent amount of people use your MVP, but then churn out and don't respond to requests for feedback? Essentially, they don't really care about the problem or solution, they were mostly just curious. Scrap it and start again? From my experience and what I hear from friends, this seems very common.
Unrelated: In a previous talk, Brian Chesky mentioned writing down the core values of Airbnb before they had hired a single employee - do you think (other) startups should follow this example in the early days and consider the future culture of the company?
