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Epimenides paradox
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The Epimenides paradox reveals a problem with self-reference in logic. It is named after the Cretan philosopher Epimenides of Knossos who is credited with the original statement. A typical description of the problem is given in the book Gödel, Escher, Bach, by Douglas Hofstadter:Epimenides was a Cretan who made the immortal statement: "All Cretans are liars."
Epimenides from "Promptuarii Iconum Insigniorum"
Epimenides from "Promptuarii Iconum Insigniorum"
Self-reference
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Self-reference is a concept that involves referring to oneself or one's own attributes, characteristics, or actions. It can occur in language, logic, mathematics, philosophy, and other fields.
Drawloom, with drawboy above to control the harnesses, woven as a repeating pattern in an early-1800s piece of Japanese silk. The silk illustrates the
Drawloom, with drawboy above to control the harnesses, woven as a repeating pattern in an early-1800s piece of Japanese silk. The silk illustrates the means by which it was produced.
A self-referencing work of graffiti apologizing for its own existence
A self-referencing work of graffiti apologizing for its own existence
Self-referential graffiti. The painter drawn on a wall erases his own graffiti, and may be erased himself by the next facade cleaner.
Self-referential graffiti. The painter drawn on a wall erases his own graffiti, and may be erased himself by the next facade cleaner.