Probably part of the reason, could be an early development of the ability to pick out the form of a camouflaged predator, or prey when out hunting. Another angle, is the way symmetry helps recognition, in the Human face for example. I've heard that if a two pictures with mirror images are seen of the same face. The reverse image can seem strange. Maybe one of the reasons some people don't like their passport, or ID photos, because they are comparing them to their reflection. The universe was pretty ordered until we started to play around with our little section. Perhaps also associated with the idea of self protection, or of a group, would be the alarm over something that was unusual, or 'ju...

Probably part of the reason, could be an early development of the ability to pick out the form of a camouflaged predator, or prey when out hunting. Another angle, is the way symmetry helps recognition, in the Human face for example. I've heard that if a two pictures with mirror images are seen of the same face. The reverse image can seem strange. Maybe one of the reasons some people don't like their passport, or ID photos, because they are comparing them to their reflection. The universe was pretty ordered until we started to play around with our little section. Perhaps also associated with the idea of self protection, or of a group, would be the alarm over something that was unusual, or 'just not right' that deserves caution or investigation.. Symmetry suggests stability, so I suppose it can be comforting