>>13503750It might be, but it doesn't really need to be, and evidence for its being so is circumstantial. Showing that causality is altered under mass doesn't really prove time is a dimension. Since causality is (would be) reliant on matter, distorting matter would dilate causality without it needing to be a dimension.
Time doesn't care about life, but life cares about time.
Do you understand the premise now?