I would argue that time is not a dimension but a vector that can only be traveled in one direction.
I agree I don't believe in change, it's an illusion. Rather, there are only successions of causally-linked immutable values, and time is derived from the perception of these successions.
Causally-linked means the future is a function of the past; life applies reality to us to derive a new immutable us and we assign identity to these chains of values, and perceive change where there is none.
I'm going to bed