01.01.01.28—Cubic Optical Illusion
$7.00
Photograph by Gerd Altman
“Our perceptions are fallible. We sometimes see what isn’t there. We are prey to optical illusions...[and] are error-prone.”
Carl Sagan, American Astronomer, Cosmologist, Astrophysicist, Astrobiologist, and Author (1934 — 1996)
