Rabbit–duck illusion

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"Kaninchen und Ente" ("Rabbit and Duck") from the 23 October 1892 issue of Fliegende Blätter

The rabbit–duck illusion is an ambiguous image in which a rabbit or a duck can be seen.[1]

The earliest known version is an unattributed drawing from the 23 October 1892 issue of Fliegende Blätter, a German humour magazine. It was captioned "Welche Thiere gleichen einander am meisten?" ("Which animals are most like each other?"), with "Kaninchen und Ente" ("Rabbit and Duck") written underneath.[2]

After being used by psychologist Joseph Jastrow, the image was made famous by Ludwig Wittgenstein, who included it in his Philosophical Investigations as a means of describing two different ways of seeing: "seeing that" versus "seeing as".

References[edit]

  1. ^ Weisstein, Eric W. "Rabbit–duck illusion". MathWorld. 
  2. ^ McManus, I. C.; Freegard, Matthew; Moore, James; Rawles, Richard (2010). "Science in the Making: Right Hand, Left Hand. II: The duck–rabbit figure" (PDF). Laterality. 15: 167. doi:10.1080/13576500802564266. Retrieved 18 February 2012. 

External links[edit]