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Grammatical Man: Information, Entropy, Language and Life

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Grammatical Man is the first book to tell the story of information theory, how it arose with the development of radar during WW2, and how it evolved. It describes how the laws and discoveries of information theory now support controversial revisions to Darwinian evolution, begin to unravel the mysteries of language, memory and dreams, and stimulate provocative ideas in psychology, philosophy, art, music, computers and even the structure of society.

Perhaps its most fascinating and unexpected surprise is the suggestion the order and complexity may be as natural as disorder and disorganization. Contrary to the entropy principle, which implies that order is the exception and confusion the rule, information theory asserts that order and sense can indeed prevail against disorder and nonsense. From the simplest forms of organic life to the words used to express our most complex ideas, from our genes to our dreams, from microcomputers to telecommunications, virtually everything around us follows simple rules of information. Life and the material world, like language, remain "grammatical." Grammatical man inhabits a grammatical universe.

319 pages, Hardcover

First published January 1, 1973

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Jeremy Campbell

28 books13 followers

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5 stars
119 (43%)
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99 (36%)
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45 (16%)
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7 (2%)
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Displaying 1 - 30 of 50 reviews
Profile Image for Koen Crolla.
850 reviews252 followers
February 18, 2024
An introduction to information theory and an attempted sketch of its applications, written by, unfortunately, a journalist. Shannon was still alive when this book was written and he provides a quote or two (so does Stanisław Ulam, for some reason), but his influence isn't nearly great enough to save it.
The first part tries to explain information theory itself, which Campbell doesn't really understand, mainly through dubious word association involving the concept of entropy in thermodynamics, which is really not the same thing as information entropy—a lot of it is almost right, and probably a fair enough effort for a journalist. The following parts, where Campbell tries to piece together the implications for other fields, are all much worse: the same vague word association takes us from binary code to DNA, over a lot of nonsense about probability and Gödel's incompleteness theorem (which he at one point seems to mistake for Heisenberg's uncertainty principle?) to evolution, back to DNA, and finally through some version of Chomsky's bullshit to the workings of the brain and psychology, none of which he understands any better than Shannon's work. Here, too, some of it is almost right, but much more of it only looks superficially plausible and almost none of it is as related to information theory as Campbell thinks it is, or at the very least not in the way that he thinks it is.

Information theory admittedly looks a lot less esoteric these days, now that everyone knows what a bit is and we all have to deal with digital communication networks every damn day of our lives; the fact that this wasn't the case in 1982 explains some of the badness in this book, and some of the remainder is journalist syndrome, but the great bulk of it is due to Campbell fundamentally having a crank's brain.

I got this book for free (rescued it from a paper recycling bin) and I still feel I paid too much for it.
Profile Image for Ryan Russell.
14 reviews1 follower
November 1, 2012
fundamentally deconstructed my worldview in the best possible way..
Profile Image for Julio The Fox.
1,820 reviews146 followers
July 28, 2021
"We do not speak a language. Language speaks through us." Are we all just "mechanical animals, to quote Marilyn Manson? Is information, whether in language, computer code, or DNA what defines a living thing? "Sloth or entropy" is not our only destiny in life, pace Thomas Pynchon. GRAMMATICAL MAN makes a strong case for all humans really being cybernauts, even if we don't know it.
Profile Image for Goatboy.
297 reviews109 followers
October 6, 2026
Read this in my 20's (close to when it came out) and it's fascinating to me to see how foundational it was to my thinking about reality. This might be the source for several ideas I cherish that I forgot the OG source. Some of the ideas are definitely dated (we are talking early 80's here so what could Campbell know of our world right now?). But I enjoyed the re-read.

And it is passages like this that I believe literally modified my synapses:

Seen from this perspective, the universe generates its own novelty as it goes along. It is law-like, but unpredictable. There is always more information in it than there used to be. "In Laplace's world, there is nothing that corresponds to the passage of time," Layzer has written.
For Laplace's "intelligence," as for the God of Plato, Galileo and Einstein, the past and future coexist on equal terms, like the two rays into which an arbitrarily chosen point divides a straight line. If the theories I have presented are correct, however, not even the ultimate computer - the universe itself - ever contains enough information to specify completely its own future states. The present moment always contains an element of genuine novelty and the future is never wholly predictable. Because biological processes also generate information and because consciousness enables us to experience those processes directly, the intuitive perception of the world as unfolding in time captures one of the most deepseated properties of the universe.


I have since read similar thoughts by Henri Bergson from the early 20th century, but this always stuck as a way to not let standard determinism completely take away free will...
Profile Image for Sebastián González.
5 reviews1 follower
March 3, 2021
I have a hard time thinking of what to say about this book. Not because is boring or hard to read, but because it manages to precisely synthesise complex and confusing ideas that everyone has visited in two minutes of daydreaming.
I can't believe this book is older than 30 years and I can't come up with reasons on why it isn't more quoted in popular science.

There aren't spoilers: information exists as an intrinsic part of reality and pervades any and all systems, both natural and artificial.
Jeremy Campbell does its job exquisitely good: from simple beginnings and assumptions, concludes in amazing and complex consequences on how languages work, and how life drives itself and how complexity arises in the universe. And while doing it, it parallels the message he's conveying. It will definitely leave with you with an enhanced respect and awe for complexity in nature, man-made systems and everything that exists.
Profile Image for Fábio.
237 reviews20 followers
August 25, 2018
Da termodinâmica à computação; da física quântica à genética; da neurociência e dos sonhos à sociedade. Jeremy Campbell escreveu um livro que segue atual. Em uma excelente narrativa, ele evidência o caráter universal e unificador da “informação”.
Profile Image for Stephie Williams.
382 reviews44 followers
August 5, 2014
I thought that the book was not argued very well. It was like, oh this person said this and that person said that. No support offered except that of the person referred to. It sytle seem like, da da da. Overall the book was okay because it did present some interesting ideas. But if your interested in a popular book covvering informtion theory, I would suggest James Glieck's The Information. It's more interesting and much better written.
Profile Image for Thomas Yount.
21 reviews
April 20, 2008
This book was recommended to me by one of my favorite teachers ever: Kathleen Saunders.
This book gets into information theory, the human brain, capacity for varying levels of consciousness and a lot of other mind-f*cking ideas.
Some keywords you might learn...entropy, chaos, neotony...
Profile Image for Barbara Lorei.
1 review
Read
June 18, 2012


A good read. Opens doors to new thinking. It may be out-dated by now, but for a beginner on information, it is a great help.



Profile Image for George Mills.
47 reviews4 followers
May 23, 2013
This book may very well change your ways of perceiving all forms of communication. Based on the theories of Shannon, it demonstrates how our means of communicating are affected by the laws of thermodynamics (especial entropy). Reading this book made me radically rethink the way I worked and the ways in which I managed my communication with: upper management; managers of other areas of the corporation; my direct and indirect reports; affiliate companies; the medical community; and patients being treating with our medications. Understanding how our forms of communication contain some degree of entropy and how information degenerates into noise (entropy) led to major improvements as well very low rates of misunderstanding and confusion.
Profile Image for Murderdeath.
19 reviews23 followers
March 30, 2022
I dig it. The sentiment is at times datedly humanist, but Jeremy Campbell is one heck of a writer and this book touches on a number of topics that I find deeply interesting (probability, Information Theory, cybernetics, genetics and linguistics).

This one has a place on my shelf between James Gleick's The Information and Douglas Hofstadter's Gödel, Escher, Bach. I haven't started reading my copy Thomas Moynihan's Spinal Catastrophism but I suppose that would be a logical next step after finishing this.
Profile Image for Trevor.
1,601 reviews26.1k followers
Want to Read
March 2, 2008
I'm actually re-reading this book - the first time I read it years and years ago I thought it was totally inspired. His premise is that the universe is made up of three fundamental materials - Energy, matter and information. But I need to read this again to not make this sound like religious rubbish.
Profile Image for Jrobertus.
1,069 reviews31 followers
July 19, 2007
information theory, genetic rules, language and society generate knowledge. some straw men are knocked over, but it is a generally acceptable book.
Profile Image for Howard.
Author 8 books104 followers
February 27, 2008
Probably outdated by now, but when I read it, it was all a revelation to me. My introduction to information theory. I imagine it might still be a good place to start.
Profile Image for Behrooz Parhami.
Author 9 books39 followers
July 25, 2021
It is clear that a 300-page book cannot cover the history of our universe, from the Big Bang to human evolution, human communication, and artificial intelligence, as Campbell tries to do here. Yet, an understanding of where we stand and where we are headed as a species requires an examination of the entirety of events leading to our emergence (“creation”). Campbell’s thesis is that information is at the root of everything, not just the obvious domains of genetics, languages, and brain functions, but also nature as a whole.

The science of information was born during World War II, directly affecting communications and computing, but also stimulating ideas in biology, linguistics, probability theory, psychology, sociology, philosophy, and art, that is, nearly everything! Processes found in nature do have random elements, but they mostly resemble the orderly formation of sentences in a language, yielding boundless structures from a finite collection of “words.” So, we don’t just have a grammatical man, as the book’s title suggests, but also a grammatical universe.

There’s a good deal of overlap between this book and Yuval Noah Harari’s Sapiens: A Brief History of Humankind, which I have reviewed before.

https://www.goodreads.com/review/show...

Campbell’s discussion of information theory also overlaps with the biopic A Mind at Play: How Claude Shannon Invented the Information Age, by Jimmy Soni and Rob Goodman.

https://www.goodreads.com/review/show...

The book is composed of four parts, whose titles and chapters are listed below, plus an afterword entitled “Aristotle and DNA,” which elaborates on how Aristotle’s view of the world was biological/informational, rather than mechanical, which makes him the sole classical thinker to have seen a glimmer of the theory of information.

Part 1. Establishing the Theory of Information (6 chapters): The second law and the Yellow Peril; The noise of heat; The demon deposed; A nest of subtleties and traps; Not too dull, not too exciting; The struggle against randomness.

Part 2. Nature as an Information Process (4 chapters): Arrows in all directions; Chemical word and chemical deed; Jumping the complexity barrier; Something rather subtle.

Part 3. Coding Language, Coding Life (5 chapters): Algorithms and evolution; Partly green till the day we die; No need for ancient astronauts; The clear and the noisy messages of language; A mirror of the mind.

Part 4. How the Brain Puts It All Together (6 chapters): The brain as cat on a hot tin roof and other fallacies; The strategies of seeing; The bottom and top of memory; The information of dreams; The left and right of knowing; The second-theorem society.
Profile Image for Rachel.
164 reviews39 followers
October 25, 2020
I enjoyed this. This was pleasantly coherent for science writing. He discusses information theory and thermodynamics, then goes into describing scientific theories in a range of fields as they relate to information. I would probably have found it more engaging if not for the fact that ~70% of the material was already familiar to me -- I skimmed some of the first and fourth sections.

How information entropy and thermodynamic entropy are related to each other has puzzled me for a bit, and his attempt is the best I've seen yet at bridging them, via the notion of probability and missing information (see also: ET Jaynes). For the later parts of the book, while it seemed like several patterns he draws on are incompatible (e.g. the striving for a universal grammar (i.e. a priori rules) vs using statistical patterns (i.e. a posteriori observations) vs the impossibility of a complete description in the first place vs the individuality of certain experiences), he tries to weave the thread of information theory through everything, as well as the themes of constraints vs freedom, entropy vs redundancy.

Overall I found the book valuable. It's a summary of (then) recent scientific thought across a broad range of fields, containing a several ideas that were new to me. Some that I found particularly interesting were David Layzer's cosmological argument for why is there order instead of disorder, neoteny in humans, the importance of second order genetic information, and Noam Chomsky's universal grammar. I would be interested in seeing how these ideas have evolved in the ~40 years since this book was written.
Profile Image for Michael Finberg.
Author 3 books8 followers
November 22, 2023
“Time’s arrow is irreversible.”

I read this fabulous book in college. It opened up a new world for me by tracing the emergence of information theory and the digital civilization it spawned.

It introduces the titans of the information revolution: Claude Shannon, Norbert Weiner, and John Von Neumann. These men created information theory, cybernetics and the modern computer. They will be remembered as descendants of the titans of the industrial age: Isaac Newton, Galileo Galilei and Ludwig Boltzmann, who ushered in modern energy science.

All information was seen as a system of signals. If the signals were too new, they could not be properly recognized and used. If they were too old, they could degenerate into useless noise.

Information was something other than energy. It had no physical dimension, but was still susceptible to entropy. The implications are enormous.

Just as we face the challenge of global warming from entropic heat, we now face the challenge of information smog from entropic noise. The math is the same.

Heat and noise are merging in today's world and humanity is now at risk as feedback bottlenecks prevent people from adapting in time to the pressures acting on the physical and mental environment that make up our modern human civilization. There is a danger of a system crash due to faulty signals in our media and state institutions. Keeping the balance between too many noisy signals both old and new will determine the survival of the human race.
Profile Image for Diane Gabriel.
155 reviews13 followers
May 25, 2024
Top ten reads of all time. I generally like books I choose, in anticipation of the topic, it is rare that I dislike something I research and know will like on some level. This book however, came to me on a whim browsing through Stands Books in New York. I came across it in the linguistics section and it looked interesting immediately. Jeremy Campbell writes exceptionally well on topics that are difficult to integrate. He posits that Information Theory is all around is in everything, and he backs it up in a seamless foray into genetics, cryptography, linguistics, and psychology. Its immensely entertaining, and left me wondering why this book didn't get a Pulitzer Prize like Godel, Escher, Bach: An Eternal Golden Braid. He certainly contributed to the world of thought and I would say if this book were more widely read, and its contents taught classically, the construction of the world itself, could have looked very differently if we thought about Information Theory more often.

In summation, it is a delightful read, and I wish it were three times as long! Bravo Jeremy Campbell, I will forever be thinking about the world in a different way, thanks to your superb writing, and mind, that can put together seemingly unrelated, but naturally connected, topics like these.

Profile Image for Msimone.
144 reviews2 followers
March 22, 2017
This is amen immensely readable book that connects scientific research and theory on evolution and genetics about the origin of life to the origin of language. The forces that propel the atoms of matter that constitute all life are internally evolved nor by some external force , but from a natural, self determined evolution that is bound by certain innate rules that do not bind or limit human development but enable great flexibility in surprising although constrained ways . The author provides lucid detail about historical thought proving how much Sense and order prevail in the universe against nonsense and chaos to advance to increasingly more complex structures of physical and linguistic development. Concepts such as how the code for DNA
1,071 reviews21 followers
December 29, 2022
Popular science meets information theory in the hands of a journalist. Written in 1982, this hasn't aged well. It's not just that it predates the web by almost a decade, but it is also a little too swayed by then-fashionable arguments about evolution. Not only that but, after the sober stuff on communication, coding, entropy, DNA, it runs out of steam: chapters on human cognitive psychology can't really carry the infomration theory theme. Nevertheless, I still enjoyed this book when I first read it, when it was first published. But now, it is superseded by Gleik's "The Information".
Profile Image for Rohan Raju.
3 reviews
April 29, 2025
Excellent read! Coming in with a knowledge of information theory from both the coding theory perspective and the linguistics perspective, this book felt super fun to go through. It does an excellent job of laying the foundation for how and why info theory can show up in so many places like an easter egg.

I'll be recommending this one to my friends who want to know why I think information theory is cool.
4 reviews
September 10, 2018
Profound read

Like the previous reviewers said, the author did a fantastic job by using information theory to string biology, linguistics, brain, human society and so on. In an era when disciplines are becoming more and more specialized, a broad perspective can enable readers to view the world differently.
Profile Image for Othman.
277 reviews16 followers
September 21, 2020
I've finished reading this book, but I am quite sure I will read it again. Here is a book that teaches you about thermodynamics, information theory, syntactic theory, DNA structure, psychology, and much more. I highly recommend it.
Profile Image for Dave McCracken.
179 reviews6 followers
May 15, 2024
Back in the day 1970's, contemporary deep dive into Information Theory.
People were just learning DNA sequences and exploring artificial intelligence. Much has changed since the 70's, comparing where we are now within 5 decades is astonishing.
Profile Image for Michiel Perdeck.
29 reviews2 followers
October 4, 2026
The topic is interesting but this book is now very outdated. Insights in biology and cosmology have strongly changed. Furthermore, his explanations of information and entropy are not very helpful I think. So better read a more recent book on this subject.
Profile Image for Rohitash Kumar.
11 reviews30 followers
April 6, 2022
Such a fascinating subject. Unfortunately I found author's writing style pretty distracting and superfluous. I had to drop it halfway through.
Profile Image for CaveatEmptor.
9 reviews7 followers
Read
March 31, 2023
"At intervals, Wiener would walk into Fano's room, puffing at a cigar, and say: "Information is entropy." Then he would turn around and walk out again without another word."
Profile Image for Filippo.
346 reviews
May 29, 2026
Un bel saggio divulgativo sulla teoria dell'informazione.
Un po' datato, ma ben scritto.
45 reviews1 follower
February 9, 2026
Interesting ideas, and presents a lot of high level explanations that are useful to get an understanding of information theory and where it might lead.
At the beginning, the analogies are weak and sometimes incoherent or contradictory as he tries to draw comparisons of thermodynamics to information theory. But it gets better after that.

Some of the interesting ideas covered, include:
Trying to bridge the gap between Entropy (trend towards disorder, less information, less complexity) and emergence and evolution of life (more order, more information, more complexity) is a tall task.
Interesting is how he describes the relationship of DNA (source of info) to Amino acids (receptors of info), as well as his descriptions of how an open system doesn’t have to follow 2nd law of thermodynamics. New idea to me was that entropy in information theory is the number of possible messages, and not the actual number of messages. I also found the idea that DNA has both structural genes that act like an algorithm for the other DNA genes that are codons for protein production to be very insightful.

Overall a simply entryway into basic ideas behind information theory.
Displaying 1 - 30 of 50 reviews