Metamagical Themas
Encyclopedia
Metamagical Themas is a collection of eclectic articles written for Scientific American
Scientific American
Scientific American is a popular science magazine. It is notable for its long history of presenting science monthly to an educated but not necessarily scientific public, through its careful attention to the clarity of its text as well as the quality of its specially commissioned color graphics...

during the early 1980s by Douglas Hofstadter
Douglas Hofstadter
Douglas Richard Hofstadter is an American academic whose research focuses on consciousness, analogy-making, artistic creation, literary translation, and discovery in mathematics and physics...

, and published together as a book in 1985 by Basic Books
Basic Books
Basic Books is a book publisher founded in 1952 and located in New York. It publishes books in the fields of psychology, philosophy, economics, science, politics, sociology, current affairs, and history.-History:...

 (ISBN 0-465-04566-9).

The subject matter of the articles is loosely woven about themes in philosophy
Philosophy
Philosophy is the study of general and fundamental problems, such as those connected with existence, knowledge, values, reason, mind, and language. Philosophy is distinguished from other ways of addressing such problems by its critical, generally systematic approach and its reliance on rational...

, creativity
Creativity
Creativity refers to the phenomenon whereby a person creates something new that has some kind of value. What counts as "new" may be in reference to the individual creator, or to the society or domain within which the novelty occurs...

, artificial intelligence
Artificial intelligence
Artificial intelligence is the intelligence of machines and the branch of computer science that aims to create it. AI textbooks define the field as "the study and design of intelligent agents" where an intelligent agent is a system that perceives its environment and takes actions that maximize its...

, typography
Typography
Typography is the art and technique of arranging type in order to make language visible. The arrangement of type involves the selection of typefaces, point size, line length, leading , adjusting the spaces between groups of letters and adjusting the space between pairs of letters...

 and fonts, and important social issues. The volume is substantial in size and contains extensive notes concerning responses to the articles and other information relevant to their content. (One of the notes—page 65—suggested memetics
Memetics
Memetics is a theory of mental content based on an analogy with Darwinian evolution, originating from Richard Dawkins' 1976 book The Selfish Gene. It purports to be an approach to evolutionary models of cultural information transfer. A meme, analogous to a gene, is essentially a "unit of...

 for the study of memes.)

Major themes include: self-reference in meme
Meme
A meme is "an idea, behaviour or style that spreads from person to person within a culture."A meme acts as a unit for carrying cultural ideas, symbols or practices, which can be transmitted from one mind to another through writing, speech, gestures, rituals or other imitable phenomena...

s, language, art and logic; discussions of philosophical issues important in cognitive science/AI; analogies and what makes something similar to something else (specifically what makes, for example, an uppercase letter 'A' recognisable as such); and lengthy discussions of the work of Robert Axelrod
Robert Axelrod
Robert M. Axelrod is an American political scientist. He is Professor of Political Science and Public Policy at the University of Michigan where he has been since 1974. He is best known for his interdisciplinary work on the evolution of cooperation, which has been cited in numerous articles...

 on the prisoner's dilemma
Prisoner's dilemma
The prisoner’s dilemma is a canonical example of a game, analyzed in game theory that shows why two individuals might not cooperate, even if it appears that it is in their best interest to do so. It was originally framed by Merrill Flood and Melvin Dresher working at RAND in 1950. Albert W...

 and the idea of superrationality
Superrationality
The concept of superrationality was coined by Douglas Hofstadter, in his article series and book "Metamagical Themas"...

.

The concept of superrationality, and its relevance to the Cold War
Cold War
The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...

, environmental issues and such, is accompanied by some amusing and rather stimulating notes on experiments conducted by the author at the time. Another notable feature is the inclusion of two dialogues in the style of those appearing in Gödel, Escher, Bach
Gödel, Escher, Bach
Gödel, Escher, Bach: An Eternal Golden Braid is a book by Douglas Hofstadter, described by his publishing company as "a metaphorical fugue on minds and machines in the spirit of Lewis Carroll"....

. Ambigram
Ambigram
An ambigram is a typographical design or art form that may be read as one or more words not only in its form as presented, but also from another viewpoint, direction, or orientation. The words readable in the other viewpoint, direction or orientation may be the same or different from the original...

s are mentioned.

There are three articles centered on the Lisp programming language
Lisp programming language
Lisp is a family of computer programming languages with a long history and a distinctive, fully parenthesized syntax. Originally specified in 1958, Lisp is the second-oldest high-level programming language in widespread use today; only Fortran is older...

, where Hofstadter first details the language itself, and then shows how it relates to Gödel's incompleteness theorem. Two articles are devoted to Rubik's Cube
Rubik's Cube
Rubik's Cube is a 3-D mechanical puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik.Originally called the "Magic Cube", the puzzle was licensed by Rubik to be sold by Ideal Toy Corp. in 1980 and won the German Game of the Year special award for Best Puzzle that...

 and other such puzzles. Many other topics are also mentioned, all in Hofstadter's usual easy, approachable style. Many chapters open with an illustration of an extremely abstract alphabet, yet one which is still recognizable as such.

The game of Nomic
Nomic
Nomic is a game created in 1982 by philosopher Peter Suber in which the rules of the game include mechanisms for the players to change those rules, usually beginning through a system of democratic voting...

 was first introduced to the public in this column, in June 1982, when excerpts from a book (still unpublished at the time) by the game's creator Peter Suber
Peter Suber
Peter Suber is the creator of the game Nomic and a leading voice in the open access movement. He is a senior research professor of philosophy at Earlham College, the open access project director at Public Knowledge, a senior researcher at SPARC , and a Fellow at Harvard's and...

 were printed and discussed.

The title is an example of wordplay: it is an anagram
Anagram
An anagram is a type of word play, the result of rearranging the letters of a word or phrase to produce a new word or phrase, using all the original letters exactly once; e.g., orchestra = carthorse, A decimal point = I'm a dot in place, Tom Marvolo Riddle = I am Lord Voldemort. Someone who...

 of Mathematical Games, the title of Martin Gardner
Martin Gardner
Martin Gardner was an American mathematics and science writer specializing in recreational mathematics, but with interests encompassing micromagic, stage magic, literature , philosophy, scientific skepticism, and religion...

's column that Hofstadter's column succeeded in Scientific American. The index mentions Hofstadter's recurring alter ego, Egbert B. Gebstadter
Egbert B. Gebstadter
Egbert B. Gebstadter is a fictional author who appears in the indexes of books by Douglas R. Hofstadter. For each Hofstadter book, there is a corresponding Gebstadter book...

.

Essays

Essays include:

French edition

Metamagical Themas was also published in French
French language
French is a Romance language spoken as a first language in France, the Romandy region in Switzerland, Wallonia and Brussels in Belgium, Monaco, the regions of Quebec and Acadia in Canada, and by various communities elsewhere. Second-language speakers of French are distributed throughout many parts...

, under the title Ma Thémagie (InterEditions, 1988), the translators being Jean-Baptiste Berthelin
Jean-Baptiste Berthelin
Jean-Baptiste Berthelin, also known informally as Cochonfucius, is a French cognitive science researcher.He is connected to the Human-Machine Communication Department of the Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur .He was one of the team responsible for...

, Jean-Luc Bonnetain, and Lise Rosenbaum.

Unfortunately, the wordplay was lost in the French title, and replaced with another one (ma Thémagie would translate to "my themagy", where "themagy" is a neologism, but could also be read as maths et magie, which translates to "maths and magic"). The translators had contemplated Le matin des métamagiciens, which would have been a play on Hofstadter's title plus Le Matin des Magiciens and Jeux malins des mathématiciens (respectively, The Dawn of the Magicians and Clever Tricks of Mathematicians); however, the publisher found that suggestion to be too elaborate.
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