It's interesting reading a book which gets such a low score on Goodreads. Other reviewers call it rambling, incoherent, and repetitive; they say that it asks questions but never answers them; that it starts off interesting but quickly devolves into tedium.
Those other reviewers are right, but I actually kind of enjoyed the book anyway. Or at least I learned some things from it. I wouldn't recommend reading it, but it did contain a couple interesting ideas.
Ostensibly, the book is about the evolution of beauty: how do humans and other species perceive beauty, and are there any commonalities between species? If there are, what constraints in nature cause different animals to evolve similar sense of beauty? These are interesting questions, which the author introduces in the first chapter. But then, instead of attempting to answer them, he spends the rest of the book musing on history of science and philosophy of art.
Problems with the book:
1. The biggest problem is that it starts out sounding like a pop science book, but as soon as you get past the first chapter, you realize it's not. Like, the first chapter reads like a completely ordinary pop science intro: clear, easy-to-read prose; a concrete motivating example (the bowerbirds, a species of bird which makes art); and an interesting scientific question. So you expect the author to follow this up with standard pop science content: summaries of experiments that researchers have done, followed by explanations of their results. But Rothenberg hardly does any of that; instead, the rest of the book reads more like a lit review, basically just talking about what other scientists and artists have already said on the topic.
2. The second problem is that it's just poorly written. The writing style tends to be more "musing" than "argumentative", by which I mean, Rothenberg doesn't lay out a clear thesis and then try to defend it; instead, he just sort of wanders from point to point, roughly staying on topic within a given chapter, but with no obvious structure. If you try very hard, you can extract some sort of argument out of what he's saying, but this is nontrivial, and requires a lot of exertion on the part of the reader.
3. Also, the text tends to be very abstract and philosophical, without many concrete examples. Which I'm ok with in general, but in this book it created two problems: (a) these abstract, philosophical comments might work ok if organized into a clear and coherent argument, but just ended up being sort of incoherent and incomprehensible when placed in Rothenberg's flitting, musing style that jumps lightly from topic to topic; and (b) the first chapter really made it seem like this was going to be a light, fluffy pop science text, so I was disappointed to have lots of incomprehensible abstract morass to wade through.
4. Since each chapter was just musing on past literature, with lots of long, detailed quotes from other writers, and since Rothenberg's abstract, rambling prose was often so difficult to make sense of, it often just felt like his writing was some sort of sawdust-and-glue filler intended to pad the space between the quotes he was using.
5. In Rothenberg's defense, I don't think he wrote this book in haste. I don't think he was just trying to pad the word count as quickly as possible prior to some publication deadline. I think he is extremely sincere, and this really is the book he intended to write. He defends his own rambling, musing style, saying that he's not so much intending to educate as to inspire. On the last page of the book, he writes: "I almost want to just sing out the praises of these patterns rather than explain them to you. In the end I am a bad explainer, a mediocre storyteller, but an enthusiastic reveler – just pay attention, open your mouth in astonishment, and let the beautiful touch you, if not consume you." An admirably honest statement, and a fine sentiment, I suppose, but Rothenberg just isn't a good enough writer to pull it off. Someone like Carl Sagan or Loren Eiseley could ramble and have it be uplifting and inspiring. David Rothenberg cannot.
Stuff I learned (science):
Anyway, all of that said, I actually did learn a decent amount from reading this book, so let me list some of the facts I learned / ideas I encountered:
* Humans are not the only animals which make art. There is also a bird called the bowerbird, which builds complicated bowers to attract mates, and decorates them with blue objects from its environment. These bowers serve no functional purpose; they are not used for nests, or shelters, or anything else; the males simply build them to appeal to the females. Other animals do aesthetic displays – peacocks have beautiful feathers, nightingales sing beautiful songs, other birds do beautiful dances – but bowerbirds are the only other creature to actually construct an object, that is separate from their own body, purely for its artistic merit.
* Bowerbirds' bowers are part of their mating display; the males construct them for the purpose of attracting a female. So when we, as humans, are thinking about the internal, subjective experiences of these birds, there's a tendency to think just in terms of mating: to assume that, when the female bowerbird sees a male's bower, what she feels is something akin to horniness. Rothenberg argues that actually, what the female bowerbird experiences is something more akin to a sense of beauty. Over the millennia, bowerbirds have evolved an aesthetic, artistic sense which leads them to prefer some bowers over others, and this is not dissimilar from humans' appreciation of artwork. I had not considered this idea before, and so I found it very interesting.
* Once we consider that animals might possess a sense of aesthetics, we can ask: how might this differ across species? Are there commonalities in what different animals find beautiful? Rothenberg notes that birdsong slowed down sounds much like whalesong sped up. Why did these two very disparate species evolve similar-sounding songs? How do animals' senses of aesthetics evolve in general?
* This is when Rothenberg gets into the lit review. He says that Darwin proposed two mechanisms by which evolution occurred: natural selection and sexual selection. Natural selection is very much based on environmental constraints: traits randomly evolve, and then get selected for (or against) based on what helps the species survive. Sexual selection, on the other hand, is more arbitrary: traits such as the peacock tail evolve simply because the females of the species happen to find them attractive. According to Darwin, this process was completely and totally random. Later, Fisher proposed the idea of "runaway traits", where e.g. female peacocks preferred bigger and bigger tails, leading males to grow bigger and bigger tails, leading to a feedback loop. This adds a little bit of order and reason to the story, but still treats things like specific birdsongs as arbitrary.
* Rothenberg notes that this view (that sexual selection is arbitrary) is uncommon, or even heretical, in modern biology. Modern biologists tend to follow the view of Zahavi, who proposed that sexual selection is actually just a subset of natural selection, and that males are really just signaling their genetic fitness; for instance, a male peacock's tail is a costly signal of his health, since it shows that he has excess bodily resources to devote to such a display. Proponents of this viewpoint believe that most of what's interesting about sexual selection can be explained by natural selection. Rothenberg disagrees.
* Then Rothenberg discusses an ornithologist named Richard Prum, who is apparently one of the few biologists to go against Zahavi's orthodoxy. Prum believes that the laws of physics impose certain constraints, restricting which sorts of patterns can evolve in nature. For instance, Prum studies the coloring of birds' feathers, explaining which sort of patterns can arise, using a variant of Turing's spots-and-stripes equations. And throughout the book, Rothenberg also mentions a few other physical constraints, such as patterns in how an animal's horns can curl. However, within those physical constraints, Prum believes that it truly is arbitrary how any particular species's sense of aesthetics will evolve.
* Rothenberg disagrees. He thinks there are patterns, that certain aesthetic preferences get repeated across species, and that these reveal some sort of universal tendency towards certain aesthetic judgments. Otherwise, why would whalesong sound so much like birdsong?
* Frustratingly, Rothenberg makes almost no arguments in favor of his position. He devotes lots and lots of text to arguing against others' positions, but instead of defending his own point of view, he mostly just... states what he believes, over and over again. This is particularly frustrating when his viewpoint is so easy to defend! I can think of all sorts of ways that aesthetic universals might arise. (a) For instance, perhaps there are constants within neural wiring, such that animals' senses of aesthetics are biased in a certain direction. (b) Or perhaps there are constants in our perceptual systems, which make certain things easier to perceive. For instance, in human eyesight, the four primary colors are the ones which are easiest to perceive, and it would be hard to imagine this not shaping our aesthetics at all. © Or perhaps our senses of aesthetics are heavily shaped by nature, and we're mostly likely to find things beautiful when they're common (or uncommon) in the natural world; this could explain how all species' senses of aesthetics might coevolve. These are three random hypotheses that were essentially trivial to pull out of my ass. Obviously they're pure speculation, but Rothenberg doesn't shy away from speculation, so I am led to conclude that he simply has a malfunctioning ass.
Stuff I learned (art):
So that's what I learned about science from reading this book (it wasn't much). Perhaps more interesting is what I learned about art.
* Rothenberg is a proponent of modern art, but he takes care to distinguish between two trends in 20th-century art: (1) the infamous "what is art?" sort of pieces, like Duchamp's urinal or John Cage's silent piece of music, and (2) abstract art, like Jackson Pollock's chaotic splattered paintings – things which are not representational, but instead explore the beauty in patterns, textures, shapes, and colors. Rothenberg is critical of the "what is art?" stuff, but is a big fan of abstract art, saying that it has extended our concept of art, helping us to recognize more things as beautiful. Now that our concept of art has expanded to include things like twigs and branches arranged in a pleasing manner, or shapes arranged artfully on a canvas, we can look at nature and come to recognize things in it as art, when we wouldn't have before. (He gives the example of artists who make temporary outdoor sculptures out of twigs, leaves, rocks, and so on, noting that these are (a) beautiful and (b) really not too far off from what bowerbirds are doing.)
* While discussing these topics, Rothenberg gives a quick overview of some of the big trends in modern art; as I've never studied modern art before, I found this really interesting. He talks about artists such as Piet Mondrian, Max Bill, and the Bauhaus movement, who wanted to abstract art away into the purest, simplest mathematical forms, or to develop a visual grammar of aesthetics. These artists liked straight lines and clear geometry, and had detailed philosophies underlying their work. Then there were other artists, like Jackson Pollock, who simply splattered paint on a canvas, but in such a way that there were still underlying geometric regularities.
* Interestingly, Rothenberg finds all of this art genuinely beautiful. And he holds the (according to him) "old-fashioned" view that art should be beautiful, that it should drawer the viewer in, and have some inherent visual appeal, even before the viewer knows what it means or how it fits into the history of the art world. In contrast, he describes the views of an art philosopher named Danto, who said that anything could be art, if the art community was willing to accept it as such; it's art if you place it in a gallery and interact with it as art. Danto thinks that our senses of what is art evolve arbitrarily; he's the art theory counterpart to biologist Richard Prum. Rothenberg disagrees with Danto.
* Rothenberg also has lots of thoughts on the relationship between art and science. He seems to view them as equal but opposite forces in our society, things which are inherently pitted against one another, even as he argues for a closer cooperation between them.
* Although he insists loudly that he does think science can explain the evolution of aesthetics, if scientists would only ask the right questions, his prose is constantly peppered with framings which make it sound like science and art are two separate lines of inquiry, that science can't explain spiritual things like beauty, that scientific explanations are necessarily mechanistic and joy-sucking, and that reason and emotion are separate domains – old ideas which really don't belong here. It almost seems like Rothenberg is trying to convince himself that he doesn't believe these anymore, but they keep slipping through in the way he writes. For example:
p37: "No one who feels emotion or admiration in the face of beauty really wants it to be explained away by science. The testing and statistical analysis that characterize modern scientific reason can easily want to tear beauty up into its tiniest components."
p71: "But how much do we need to find a reason for beauty? No adaptive explanation, no matter how ingenious, can eras the sheer magnificence of what nature has managed to evolve. The progress of science must find a way to acknowledge such an insight."
* One of his main ideas in the book is that art should influence science more. He notes that science has influenced art plenty; lots of artists have taken inspiration from the beauty of organic forms, or have used ideas from science in their artistic creation. But, according to him, there have been fewer occasions when art has deeply influenced science. Over and over again, he declares that art should influence science, that it can influence science, and yet he gives almost no examples of where it has. He talks about one artistic experiment, using something called "sonoluminescence", where sound vibrations excite a chemical into giving off light; an artist worked with chemists on this project, and together they ended up advancing the field's knowledge of how sonoluminescence can work. Yet this is just one meager, paltry example. Given how strongly Rothenberg insists that art should have a place in science, you'd think he could come up with more! (One wonders, for instance, what he might think of the modern neural-network-generated art, and how this has advanced the state of machine learning.) It feels like he is almost pleading with science to consider art as a source of inspiration.
Quick chapter summaries:
Because I am a compulsive note-taker...
Chapter 1: introduced bowerbirds; introduced the idea that animals might have a sense of aesthetics; asked the question of how this might have evolved.
Chapter 2: this was the least coherent chapter. He states the big ideas of the book, then does some lit review on early scientists and their relationship to art/beauty, focusing on Darwin and a few of his early successors, Haeckel, Bolsche, and Thompson, all of which (according to Rothenberg) had an appreciation for beauty which later scientists lacked.
Chapter 3: talked about Richard Prum, Zahavi, and the question of whether sexual selection truly is arbitrary.
Chapter 4: talked about the history and philosophy of modern art.
Chapter 5: talked about camouflage: both the type that blends in with one's surroundings, and another type, like dazzle camouflage for WWI ships, which is very visible but confuses the eye into being unable to follow what's going on. Talks about squids and their remarkable camouflage/color-changing abilities. Argues (unconvincingly) that there's no clear line between coloring which is intended to stand out and coloring which is intended to blend in.
Chapter 6: talks about the relationship between art and science; spends most of the chapter quoting famous scientists and exploring their viewpoints on this topic. Argues that science and art can work together, which, of course they can; this only seems like an issue in Rothenberg's weird view where science and art are these two opposite poles in society.
Chapter 7: talks about a new, even more modern form of art: "relational art", where the art can simply be an interaction between performers and visitors to the gallery; there does not have to be any physical object involved. Tries (unconvincingly) to connect the ideas of relational art to a different trend: human zookeepers encouraging or training elephants to produce paintings.
Chapter 8: talks about cave paintings; asks what they can teach us about the fundamentals of human art. Doesn't really answer this question, but says that cave paintings incorporate "phosphenes", basic geometric images of the sort which appear when one closes one's eyes. Then talks about neuroscientists who are trying to study aesthetic perception; they in fact use abstract art because it's easier to control and vary in their experiments.
Chapter 9: talks about artists who are incorporating modern science into their works (via things like computer-generated imagery, cellular automata, etc.), and then concludes.
Anyway, don't read this book; it's not worth anyone's time.