>>26599118"time" is merely our description for the effects of motion (space) within the observable universe.
however, within a pure quantum perspective on the universe, time should at first glance be bidirectional.
this, however, does not happen because of certain characteristics that make it so not all interactions (physical, chemical, physical, quantum) are fully reversible. this is what we denominate the second law of thermodynamics: the monotonic progression of entropy, aka chaos. a complete system can only go from a more ordered state to a less ordered state. (we don't yet know why this is the case)
thus, time is defined in terms of space and chaos.
t + 1 exists only because space and its contents has changed relative to t, and we know it's t + 1 and not t - 1 because chaos can only increase.
once the heat death of the universe arrives, chaos will be at maximum, space will come to a standstill and time will cease to flow.
