The Impossible Staircase…

…or is it? Have fun wracking your brain on this one. It’s an illusion invented, my sources tell me, by Lionel and Roger Penrose, mathematician, physicist, and also well-known among skeptics as a proponent of the idea of quantum neurobiology.

It was depicted by M. C. Escher in 1961, but earlier conceived by Swedish artist Oscar Reutersvärd, though neither Escher nor either Penrose are thought to have known it.

This is a good illustration of how our own senses can fool us, and a useful perceptual example of why direct experience is not as consistently reliable as pseudoscience advocates would have us believe.

(Last Update 2011/1/11, 4:30, Crediting Corrections)


Commenting below. No spam or trolling, or my cats will be angry.

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s