Clock Past & future

Here is a clock in which past and future are in confrontation.

Is it the past that shrinks away, while future grows, or the opposite?
And what actually is the present? May be we should think of a time funnel traversed by a myriad of points of light through a multitude of stainless steel screens.
The goal is the discovery of time!

diameter 1m.50, 5'

wood, stainless steel, plexyglas

At Alcatel company in Velizy (France).