Problem-Solution Fit Hub: deciding what to build and who it is for
I keep seeing people discuss deciding what to build and who it is for, but the advice often jumps straight to tools or tactics. For Problem-Solution Fit Hub, what is the first decision you would make, and what would you deliberately leave for later? I am especially interested in practical signals that show whether an approach is working. Context from this community: Finding the right market problem before building a solution.