"Psychological time does not conform to Einstein's physical time. If... my future can be my friend's past, and if my neighbor's past can be my present, then the past cannot be completed and the future is not yet to be made. Past and future must coexist with the present. Like a landscape extending as far as the eye can see, physical time exists in its entirety at once. The canvas of time stretches from the horizon of the past to the horizon of the future. All distinction between past, present and future is but an illusion. ...physical time neither flows nor passes. It exists as a single entity; it simply is."