Yes, I understand what you mean. When I face uncertainty, I explore with not so much emphasis on testing. But once I am over with that exploratory phase, I funn

Yes, I understand what you mean. When I face uncertainty, I explore with not so much emphasis on testing. But once I am over with that exploratory phase, I funnel the learning into the TDD process to solidify my implementation and guide my design. BTW, I rarely work from a well-defined spec these days.