Philosophically it could be a moment of remembrance; looking back on ones life and their accomplishments. It is introspection of our being or our soul. In my own life, I reflected many times on the back of a ship or boat, looking out to the perpetual sea and stars. A mirror within a mirror, the stars reflecting on a smooth ocean which created an endless vast black space as if we were floating through the universe. All in that moment, I was reflecting on my existence and purpose, merely a speck within a speck.
Physics would tell us that a reflection is light waves being returned to us equally off a surface. As a photographer, I am always looking at mirror to see the world. My 50 year old camera is reflecting what it captures in its lens onto a small mirror and then onto a screen at which I gaze at the world around me. Through this reflection, I am given a choice of what I would like to capture on my medium. An image caught through a reflection of an image.
Astrophysics or Quantum mechanics may suggest that a mirror is a window to a parallel universe. Is it possible that the reflection you see in a mirror is just another you? I often wonder if my reflection has made all the same choices I have in my life; were his choices wiser than mine? We both look the same, which indicates that we have weathered through similar life events. When I look into the mirror do I see a world within a world?