Drawing Hands

Drawing Hands is a lithograph by the Dutch artist M. C. Escher first printed in January 1948. It depicts a sheet of paper, out of which two hands rise, in the paradoxical act of drawing one another into existence. This is one of the most obvious examples of Escher's common use of paradox.
It is referenced in the book "Gödel, Escher, Bach", by Douglas Hofstadter, who calls it an example of a strange loop. It is used in "Structure and Interpretation of Computer Programs" by Harold Abelson and Gerald Jay Sussman as an allegory for the eval and apply functions of programming language interpreters in computer science, which feed each other.
"Drawing Hands" has been referenced and copied many times by artists in different ways. One common tribute in tech culture is to draw robot hands drawing or building each other or a human hand and robot hand drawing each other. In geek and transhumanist culture, robotic renditions of "Drawing Hands" are occasionally produced.