Douglas Hofstadter is probably best known as the author of Gödel, Escher Bach, a classic of popular science writing published in 1979.
In 1983, he coined the word “ambigram”, meaning a piece of text that can be read in more than one way, an art form pioneered in the 1970s by the typographers Scott Kim and John Langdon. Typically, an ambigram is a word or phrase that has left-right mirror symmetry, or reads the same upside down.
