Changes(Transformations) ,Speed of changes and Causality are fundamental properties of the Universe....I think every intelligent being perceives them because intelligent beings are 'designed' to survive. They do not perceive time as they perceive change, the speed of change, the causality -cause precedes effect-(that gives the arrow of time ....past....present....future), which are fundamental properties of the universe.Time is a human concept very useful.It is important/exists only for everything that exists and who have changes and a certain speed of change .
The frame of reference....Imagine you are a common observer at a demonstration of a great illusionist /magician....You have your reference's frame...Other common observers , from TV for exemple or near the magician has their reference frame.Do you think a human observer who is 'programed to survive' and not to be a deep Universe observer ( we humans perceive reality true in our way , a codification of reality ....remember colors are only a human representation of a part of electomagnetic radiation)....he can't understand if he not are prepared to understand what the grand magician do. He understand what the magician wants That's how we are now ...we great humans observers
No....I observe only that:Transformations ,Speed of transformations ,Causality are fundamental properties of the Universe and Time is a concept very useful for survive and not only
I understood .... If I will ask you to go at an adress .... point A (x, y, z) where you will find a treasure is better to ask you to go at point A (x, y, z, t) because the treasure will be there at time t in the future not now......Conclusion:Space-time a useful concept