The mind's eye can see what the real eye's don't.
Perhaps, we see something (or not) and then rationalize it away or use any other of the cognitive biases to not pay attention or distort the facts and the truth.
Not sure why this 3rd eye is off-center and also looks upside down (with the eyelashes on the bottom).
The age old question is whether it would it be better to have the extra eye in the back of your head?
360-degree vision, way cool!
Now if we can add some high-tech sensors to augment our eyes then we could also routinely see at night, in fog, etc.
It isn't true that what you don't see can't hurt you.
Eyes wide open, and pay very good attention! ;-)
(Credit Photo: Andy Blumenthal)