[frithguild]

"You'd need to present two different images to the two eyes, and that's not easily achieved in everyday situations," he said.

[presidio9]

BTW, if you put your open hand on your nose (the way you would block a three stooges eyepoke), so that each eye can only see one picture, and you are right-handed, you should see only Ann's picture. The left brain and eye are typically dominant in right-handed people.