Iteration, Iteration, Iteration.
In DEEPdt, solutions are never perfect, nor do they ever stop evolving (unless we walk away from the user). Iteration allows for opportunity to dig DEEPer and gain even more understanding of your user’s needs. When iteration occurs, it is the designers opportunity to return to the Experiment mode (any mode needed for that matter) to tinker, toil, and refine their understanding and prototype some more. Go Back, go forth, go back, go forth… Don’t get stuck and again don’t fall in love with your solution… Just as user’s needs change and are more DEEPly understood, your solution too changes and is more understood.