If the energy uncertaintyis finite (ie. not zero), then [tau] is also finite, which indicates that observable things change with time. If the energy is not well defined, the properties with the system change with time; we are dealing with a time-dependent state.
(
The Mock TurtIe ™ --- Thinks you are a cunt, on,
Thu 20 Oct 2005, 21:28,
archived)
