for a thing to attain its maximum duration of physical existence,

it would a strong equilibrium with its surrounding environment.

this should hold true for natural things and artificial things.

artificial requiring effort of human beings to maintain (or not) this equilibrium.

equilibrium with nature.

good movies usually have a single principle story arc.

this is the foundation for the many other sub-arcs.

the arcs still left open at the end are the most interesting.