The electron paths in the path integral formulation of qm are in ordinary space-time. The end-points of the paths in the steady states must be in ordinary space-time as well. The electron's potential is exact or nearly exact either by measurement or by calculation. The electron's locations when it leaves the excited state and arrives at the ground state must be exact or nearly exact as well. Is it possible to say therefore that uncertainty does not apply to space-time as a background for natural phenomena?