It's an oldie but goody question, "Does time have more than one linear dimension"?

Mass and energy have more than one dimension. Space has more than one dimension but time only has one? Maybe time dimensions are invisible to us like the full spectrum of light is invisible to our eyes.

We always say that causality is proof that there is just one time dimension, but not in the quantum realm where there can be more than one state at a time. The other thing that seems to violate one dimension of time are the flight and acceleration aspects of UFOs that defy 'our' physics.

Sometimes the only way to learn what is possible is to go beyond the possible and venture into the impossible.

The Amy Adams movie 'Arrival' deals with this conundrum in a remarkable way.