I read that you're supposed to work on / research / carefully understand the problem that needs solving and stay away from a solution for a long as possible. Th

I read that you're supposed to work on / research / carefully understand the problem that needs solving and stay away from a solution for a long as possible. The problem has to pass a number of tests before going the next step of how you will reach people and get them to pay for a solution (often called the "go to market" strategy). Only after you've nailed this are you supposed to consider how to implement a solution.