We conventionally think of time as something simple and fundamental. It flows uniformly, independent of everything else, from the past to the future, measured by clocks and watches. In the course of time, the events of the universe succeed each other in an orderly way: pasts, presents, futures. The past is fixed, the future open ... and yet all of this has turned out to be false.
One after another, the characteristic features of time have proved to be approximations, mistakes determined by our perspective, just like the flatness of Earth or the revolving of the sun. The growth of our knowledge has led to a slow disintegration of our notion of time.
What we call “time” is a complex collection of structures, of layers. Under increasing scrutiny, in ever-greater depth, time has lost layers one after another, piece by piece.
The Elasticity of Time
Let’s begin with a simple fact: Time passes faster in the mountains than it does at sea level.
