A lot of optical illusionists, the most famous of whom is Maurits Cornelis Escher (born
June 17th, 1898 in Holland and died in 1972), made works of art to show that one cannot
trust one's logic in all circumstances.
How remarkable that people may get the same visual impulses... but come to different
conclusions. In the first drawing some see a naked woman and others see the face of a
man... In the second drawing some recognize a young girl, others an old lady... It may be
hard to force some minds to see what you see and what you think is so obvious to see!