20 August 2009 - autostereogram

But our superficial vision is no problem, because there is no real world, only a fiendishly clever autostereogram. Close one eye. Do you see in stereo? No, thus the world is a stereogram. Now put a mirror in front of one eye so that you see two scenes. Do you see in stereo? No, it’s an autostereogram. QED. A line of reasoning like this allows you to get nowhere without even a conspiracy theory!