If you are right-handed, the guy you shave (in the mirror) is left-handed.
Your brain has learned to habitually compensate for this inversion. Try
shaving (or hair grooming) while looking at your video image on your
computer (or camera) screen - this is not a mirror image, this is how your
barber sees you. If your camera software allows, you can also horizontally
flip this video image into your mirror image and compare your brain's
responses to the two views.
Bob Sciamanda
Physics, Edinboro Univ of PA (Em)
treborsci@verizon.net
www.sciamanda.com