Given the plethora of evolution books published recently, I argue it's imperative to consider this book's worthiness against these other recent publications.
Richard Dawkins' objective with TGSOE is to present his ". . . personal summary of the evidence that the `theory' of evolution is actually a fact - as incontrovertible a fact as any in science." [1st pg. of the Preface]. This appears to make this book an argument for evolution, especially considering the subtitle, "The Evidence for Evolution". This framing also matches exactly to the explicit motivation expressed by evolutionary biologist Jerry Coyne in his book,
Why Evolution Is True.
Having read both I'd recommend Coyne's book if one is looking for an optimal argument on why Science considers evolution a fact and why there are no remaining hypotheses able to challenge evolution as an explanatory model for the evidence or discredit the findings supportive of evolution. It's much more concise, sticks more closely to peer-accepted findings, is more transparent about hedging on explanations where confidence is not yet overwhelming, and presents its findings in a manner easier to understand to someone not well educated in biology.
However, given that I think even the Coyne book falls short on its argument I also recommend molecular biologist Daniel Fairbanks'
Relics of Eden: The Powerful Evidence of Evolution in Human DNA to provide additional evidence contained within all of life's DNA that evolution is both true and convincingly falsifies all prior arguments made by creationists and intelligent design creationists. Coyne makes an arguable assertion on why he didn't include a specific chapter on the evidence in our DNA though he weaves it into other chapters; I think that missing chapter is why Coyne's book is not a masterpiece. I'll post the link to his argument in the comments section of this review.
What I like about TGSOE and why I still recommend purchasing it is Dawkins' skill as a teacher. I quickly left by the wayside that this book was an argument and instead treated it as a tutorial. What I especially liked about Dawkins' book which makes for a poor argument but a great tutorial is his use of analogies and thinking exercises. Dawkins provides examples not merely because they provide devastating arguments for evolution, but instead because they are teachable moments. His reporting on the guppy and the Lenski experiments were as effective as any of Coyne's examples as arguments. However, Dawkins' distinguishes himself in providing examples that allow the stories and principles to resonate well after having read them. He asks questions, and guides us to how the evidence answers those questions. This makes for a lengthier book than Coyne's, but also helps reinforce the topical matter. The numerous photographs in the book also helped reinforce his examples and were an unexpected surprise.
An example of a powerful teaching moment was that Dawkins starts with how hominids acted as an agent to evolve wolves into an astonishingly broad collection of domestic dog breeds in the blink of evolutionary time. At first I thought this was too simplistic; I was wrong. Dawkins' builds on that reportage by then showing how plants and animals' dependent on those plants each act as agents causing the other to evolve. This eases the beginner (which I'm not though I'm also not an expert) into better appreciating how natural selection works. This initial primer on natural selection is not where it ends, instead Dawkins' excels at teaching natural selection from several aspects in a manner that optimizes retention of the principles discovered and the evidence falsifies other proposed mechanisms. Given the fact this makes for a bigger book than Coyne's, Dawkins' book is superior at taking on topics at a more advanced level. Dawkins begins at an even more elementary level than Coyne does, but then uses chapter after chapter to build upon what was learned in the previous chapter to flesh-out our understanding of evolutionary topics, particularly natural selection, how the variation in our DNA provides a map to our ancestral heritage, and how an intelligent designer is a ludicrous notion once we've understand all the evidence collected to date which not only validates evolution but frequently falsifies the idea of a designer - where the score is an uncountable number of observations for Science to zero for design advocates (which is a primary reason they don't publish in relevant peer-reviewed journals).
Where Dawkins' book suffers is related to his own personal musings. As a tutorial these musings are often but not always instructive. Science is significantly about what to research next given we certainly don't know everything. Dawkins' allows us a peek into where the research is heading. In fact, if you enjoy the chapter about evolutionary development, than I highly recommend adding to your knowledge in this area given it too provides overwhelming evidence for evolution while falsifying creationist/IDC notions, the classic is still biologist Sean B. Carroll's
Endless Forms Most Beautiful: The New Science of Evo Devo. In addition, scientists as creative thinkers are often thought of as contradictory attributes when in fact it's a necessary element of framing your hypotheses or trying to create reasons to explain surprising data discoveries and then go off and attempt to validate these new notions. Science as a process actually yields more creativity than nearly all other thinking disciplines and Dawkins infers such in many of his musings.
One weakness I found is that Dawkins speculates in areas where the science is already being conducted, e.g., group selection, and the math regarding the number of planets where life could exist. So why waste pages speculating with zero data when he could have instead reported where the efforts were to date and extrapolated from there? In addition Mr. Dawkins can be a somewhat sloppy writer if this were treated like an argument rather than a teacher teaching; opening up opportunities for creationists to dishonestly quote-mine him where he is a preferred target of theirs, e.g., "the fact of our own existence is almost too surprising to bear" on pg. 425 and his other extraordinary reflections not shared by many of his peers.
Such rhetoric is sloppy because creationists often disingenuously attribute something one scientist states as personal opinion as that believed by all scientists. In a perfect world such intellectual dishonesty wouldn't occur and we wouldn't have to worry about how a great teacher's occasionally sloppy rhetoric is twisted to argue the opposite of what both the teacher and his discipline's adherents understand. So if you are a creationist looking to test your faith against what Science understands, the Coyne and Fairbanks' books are far sterner tests and provide less opportunities to avoid confronting the evidence that destroys that faith or at least requires modification if one is honest with oneself. If you want to actually learn and optimize the quality of the teaching where you forgive Dr. Dawkins occasionally lapsing into tangential topics, this book will resonate long after you've finished it and serve as a handy reference guide after your initial read.
I gave the book four rather than five stars primarily because I think he needs to use more research assistants to better footnote his book to more of the evidence he's reporting. While I've encountered nearly all his examples prior to my reading his book and know he's accurate in his reporting (with the exception of his possibly extending the findings in the Lenski experiment), books on controversial subjects should go over-board in citations. He also should have provided more examples from other scientists than his own musings, coupled to his musings not adding much, e.g., I found his zeal for computer programs extraneous to a book serving as a general review of the state of evolution. This adds up to the fact he needs a sterner editor. Given his success in selling prior books, it's not a surprise he was given so much latitude - to a fault I think.
If after the purchase of this book you remain excited about the topic and want to learn more, I recommend at least considering (I haven't read it yet but it's in my queue) getting Carl Zimmer's new book,
The Tangled Bank: An Introduction to Evolution. Mr. Zimmer is one of our most trusted and respected science writers and is a brilliant communicator of evolution both in his prior books, periodical articles, and his blog. Tangled Bank is a text book focusing strictly on teaching evolution.