François Brunelle, a Montreal artist who has been photographing hundreds of pairs of doppelgangers over decades for a project called I'm Not a Look-Alike!, put it like this: "Someone, out in this world, is looking at himself in the mirror and seeing more or less the same thing that I am seeing in my own mirror. Which brings us down to the question: Who am I exactly? Am I what I see in my reflection or something else that cannot be defined and is invisible to the eyes, even my own?"

QUESTION: Raises the enduring philosophical question of whether identity resides in appearance or something invisible to sight — worth pursuing in a piece on selfhood and doubles.

Naomi Klein, Doppelganger, loc. 80