This paper explores Dynamic Unity between Theory U and System Dynamics as a way to generally illuminate the "blind spot" and create the setting for presencing. By describing the blind spot as a System Dynamics process with a model and behavior, it is hoped that Dynamic Unity will facilitate recognition of the blind spot and produce better understanding of social actions. Dynamic unity between Theory U and System Dynamics will facilitate: identification of common assumptions, modeling of the current problem, producing repeatable results through simulation, and discovery of new insights from simulation results. The instance of presencing will remain the domain of social science, neuroscience and others to explain. Using System Dynamics to project policies through simulation, identify emerging phenomenon, accelerate the learning process, decrease dependence on past experience, change mental models into new insightful beliefs will take us to the threshold of Theory U presencing.