I have thought and written that a fourth time dimension is required to enable motion in space, else object motion in three dimensions would create an overlapping smeared mess. But would it? Given matter-wave awareness from particles to de Broglie waves of objects, may we not acknowledge that the wave content of an object could become the object displaced in three dimensions? It would have moved without overlapping and smearing. Or would non-linear wave interactions during the event force us back to the original idea of four actual dimensions with a separate object at each now? What is time in either process?