Despite the fact that quantum mechanics does not totally
dismiss the possibility that time could serve as an operator
carrying some agential capacity, time in the usual practice
of quantum mechanics is taken to be a parameter instead of
an operator. An alternative to render time to be an operator
or an agency in the realm of quantum mechanics is found in
appreciating the local act of preparing boundary conditions
explicitly. The act of preparing boundary conditions is
inseparable from another local act of measuring part of the
boundary conditions since the preparation assumes identification
of the participants. Both preparation and measurement are forms
of interaction of material origin. Preparation-measurement
complex constitutes a unique form of dynamics in the sense that
what has been prepared can subsequently be measured and what has
been measured can participate in subsequent preparation. Although
time as a parameter in quantum mechanics is synonymous with
complete preparation of boundary conditions to whatever extent in
a manner of being totally independent of the act of measurement,
preparation-measurement complex through local acts undermines
time as a parameter. Instead, time as an operator or an agency
comes up. What is specific to quantum mechanics is the occurrence
of quantum entanglement intertwining the perparation-measurement
complex. Unless both acts of preparation and measurement are
rigid enough to eliminate room for internal determination on the
part of local participants, quantum entanglement can make it
possible to put those local participants as much as possible under
a common nonlocal umbrella of quantum coherence. This is nothing
but an actual embodiment of time as an agency. Quantum entanglement
as an intrinsic material capacity of organization extending
nonlocally, potentially without limits, is tailored by another
agency called time. Actual emergent phenomena of material origin
in the empirical domain are due to the interplay between two
agencies, quantum entanglement and time.