Mine
Before anything gets built, the real problem needs to be understood — not assumed.
The Mine stage breaks down your idea into its core elements. What problem does it solve? How do users currently handle it? Where do existing solutions fall short? This isn't a requirements-gathering exercise — it's a deliberate process of stripping away assumptions so the first version of the product focuses on the smallest, most valuable thing worth building.
This is also where GoldenAxe says no for the first time. Features that don't serve the core problem get flagged early — before they become expensive distractions.
A clear problem definition, target user, and validated product direction.