Signature in the Cell: A View of Its Reviewers

I have a telephone interview scheduled with Dr. Stephen C. Meyer, author of Signature In the Cell: DNA and the Evidence for Intelligent Design, this afternoon (update: find that interview here). Part of my preparation has been reading through reviews of the book on Amazon, where I noticed some patterns that I decided to quantify. The results do not represent the whole world of the Intelligent Design controversy—there’s nothing random about the sampling—but they are intriguing nonetheless.*

Strong Reactions

Of the 200-plus reviews of the book posted on Amazon, 75 percent were highly positive (5 stars) and 17 percent were very negative (1 star). Six percent were 4-star ratings, and the remaining 1 percent (percentages are rounded) were either 2 or 3 stars. This is about as non-normal a distribution as you’ll ever see; an upside-down bell curve, with a skew toward the positive. The obvious interpretation of a response set like this is that the book produces strong reactions. One way or another it’s a great book, according to its reviewers: either great in its contribution to science, or else greatly upsetting and disturbing to science.

As I went through the reviews in detail I coded each one on five factors:

  • Had the reviewer actually read the book?
  • Did the reviewer introduce theological considerations into their assessment of the book?
  • Did the reviewer come out with a dogmatic statement for or against Intelligent Design?
  • Did the reviewer use negative and/or abusive language in describing representatives of the position they oppose?


Did They Read the Book?

On the first of these I gave the benefit of the doubt to each reviewer: I assumed they had read it unless they stated otherwise, or unless they said something that clearly demonstrated they had not read it. One reviewer I placed in that latter category said that the book presented no research and no scientific predictions. That’s an old anti-ID trope that I’m guessing he or she pulled out of the usual set of anti-ID talking points. In the case of this book, it’s just obviously false, as anyone should be able to see even by taking a quick look at the book’s Amazon preview. Obviously this reviewer did not even invest even that minimal effort into the book before giving it a negative review.

Some reviewers said they “skimmed” the book or read only portions of it. I placed them into a middle grouping. There were a small number who seriously misrepresented the content of the book, which would strongly indicate they hadn’t read it, yet they said they had read it. Rather than concluding that they were lying, I placed them into the same middle group. Thus there were three categories:

  • LIkely read the book (granting the benefit of the doubt).
  • Communicated that they read only part of the book, or communicated they read the book but made errors of representation that makes that statement doubtful
  • Communicated that they did not read the book


So then, who read the book? Of those who rated the book favorably (5 stars), 94 percent likely read the book, and 2 percent communicated they had not read it, and 4 percent were in the middle grouping. Of those who gave the book a 1-star rating, only 26 percent likely read the book. About 43 percent of very negative ratings came from people who read the book only in part (or whose reading of the book was in doubt), and 31 percent came from people who felt free to pronounce their opinion without even reading it.

Here’s another way to look at the same information. Three-quarters (75 percent) of reviews on Amazon were very favorable. Counting only those who (with the benefit of the doubt) actually read the book, however, that proportion jumps to 87 percent.

Theological Considerations?

What about theology? I used a simple yes/no distinction for this one. If theological considerations were present in the review, either in the arguments (pro or con) or in the conclusions the reviewer drew, I coded the review as a positive on the theology scale.

I’ll start again with those who gave the book a 5-star rating. In this group, only 8 percent introduced theological considerations into their reviews. But among those who gave the book a 1-star rating, 51 percent made theological considerations a part of their case. The positive reviewers got it right: the book is about science and philosophy of science, not about theology. One wonders how those 51 percent missed that.

Dogmatic In Their Views?

The above two analyses showed significance of .000 on a chi-square test. The third analysis did not have enough cases to allow for significance testing, and I must make it clear that it’s not as reliable a measure as the first two. The question was, Did the reviewer make a dogmatic statement for or against ID, to the point of saying that the question is settled once and for all? That was hard for me to operationalize in a bias-free way, so please take all due care in interpreting what I present next, because its reliability is not at all certain.

As I coded the reviews (keeping that disclaimer in mind), this is how it came out:

Of those who rated the book with 1 star, only 9 percent avoided dogmatism of the sort just described. More than nine-tenths said something to the effect that the question is settled, there’s no need to pursue it any more. Many of them were more colorful than that: The question is settled, and attempts to keep pursuing it are just lies from the “Dishonesty Institute.”

But those who rated the book highly had more open minds to the issue: only 20 percent of that group made statements to the effect that “the question is now settled.”

I wondered whether those who had not read the book might be more (or less) dogmatic in their view of ID than those who had read it. The result: if the analysis included just those who reviewed the book negatively, no significant difference was found (those who read the book were neither more nor less dogmatic than those who had not read it). If I included all the reviews, there was a definite difference between those who had read the book and those who had not read it. But that doesn’t reveal anything we didn’t already know from earlier analysis showing that among the 75 percent of reviewers who rated the book with 5 stars, the overwhelming majority had read the book and had also avoided dogmatism in their conclusions.

Personally Negative or Abusive Language

Another analysis that was significant to the .000 level was that related to personally negative language. Negative reviewers of the book were very negative: 86 percent of 1-star raters used personal pejorative language (accusations of stupidity, unthinkingness, or worse) with respect to Meyer or ID proponents generally. Positive reviewers were not perfectly kind to their opponents: 13 percent made personally critical comments with respect to their opponents.

But ID opponents’ language was considerably stronger. My coding for negative language was such that I included any negative personal reference whatsoever made to holders of the reviewer’s viewpoint, even at mild levels like, “Those who disagree with x must not be thinking clearly.” Some of the language was actually abusive (accusations of dishonesty, lying, or even “mendacious intellectual pornography”). Abusive language to that degree was present in fully 57 percent of 1-star reviews of the book, but only 3 percent of 5-star reviews.


I can’t say what larger population these reviewers represent, so these conclusions can only fairly be taken as a description of the actual reviewers on Amazon. Negative reviewers were much less likely than positive reviewers to have read the book and to have their opinions of the book affected by theological considerations. To the (unknown) extent that my third analysis was reliable, they were probably also much more likely to deliver closed, dogmatic conclusions about the overall issues involved. The Personal Negativity analysis showed that ID opponents among this set of reviewers are putting a lot of negative emotion into the controversy. Other reviewers have wondered why, and have made suggestions. Is it anger? Fear (feeling significantly threatened)? They don’t know, and neither can I conclude what’s going on, but one way or the other it’s clear that ID opponents among this set of reviewers are not behaving very well in public.

And for my final comment I’ll draw upon my own impressions of the larger world of controversy on this issue. ID antagonists, in my experience, typically complain that proponents are closed-minded and theologically driven. This group of reviewers turns that completely upside down. ID opponents often charge proponents with anti-intellectualism, too. But who in this group of reviewers was more likely to spout an opinion without bothering to read what they were talking about?

*Note 1/16/10: I have re-visited the reviews and taken a slower, more thorough look at each of them. I generated more reliable operational definitions for the factors, and I have slightly revised some of the numbers in here based on that review, and I have added another factor. My coded datasheet is available for your inspection and review.

Tom Gilson

Vice President for Strategic Services, Ratio Christi Lead Blogger at Thinking Christian Editor, True Reason BreakPoint Columnist

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13 Responses

  1. Bill says:

    Here is a noteworthy review from Dr. Francisco Ayala on the BioLogos site.

  2. Tom Gilson says:

    Dr. Ayala’s review is overwhelmingly theological, and I think also theologically weak. I’ve had opportunity to deal with those arguments in the past.

  3. Bill says:

    Thanks Tom. Great read. Your point that there aren’t really contradictions between science and religion only “apparent contradictions” is especially well made. In that vein, you might like the following paper on “Creation, Evolution and Christian Laypeople” (questions about evolution from a pastor’s perspective) by Dr. Tim Keller.

  4. woodchuck64 says:

    The obvious interpretation of a response set like this is that the book produces strong reactions.

    And accusations of review crashing. You’re not going to get meaningful results if both ID supporters and opponents believe the other side is piling on fake reviews at Amazon, and are taking steps to right that wrong by stretching out the 5 star and 1 star reviews, respectively.

  5. Tom Gilson says:

    Do you suppose both could be true?

  6. pds says:

    My strong impression is that Ayala did not read the book either.

    I commented on his “review” here:

  7. pds says:

    Tom, a serial review of Meyer’s book is beginning at the Jesus Creed blog. I would love to see your input there.

  8. woodchuck64 says:


    Do you suppose both could be true?

    The Discovery Institute put out this, excerpted:

    If you have read Signature in the Cell, please write a review at (they need not be long, just honest). This is a book that has earned its place in the top 10 list of bestselling science books at Amazon, the book that made the Times Literary Supplement’s Top Books of 2009, and an author who was named “Daniel of the Year” for his work. Please take a moment and defend Dr. Meyer and his groundbreaking book.

    So desperate are the Darwinists that they’re the gaming the ratings system at in an effort to suppress the message of Signature in the Cell — that DNA provides scientific evidence for intelligent design. You can help make a difference by supporting the book at, and by recommending it to your friends.

    Full note here.

    The likely result of this would be that supporters would rally to buy the book with the intention of giving it a good review.

    The likely result of the propagation of this plea for help would be even further trashing of the book on Amazon by ID opponents who are naturally not inclined to buy it, but may feel justified in, say, reviewing the title alone to balance what they perceive as a flood of biased positive reviews.

  9. Kendalf says:

    woodchuck, what is wrong with DI requesting that people read the book and submit an honest review of it? In contrast, I have a problem with people who never even read the book submitting “reviews”. The statistics that Tom has compiled suggests that the overwhelming majority of false and invalid reviews comes from those who gave the book a negative rating.

    In posting DI’s e-mail requesting reviews for the book, it’s only fair that you should mention the posts on Richard Dawkin’s website and Panda’s Thumb asking their followers to vote up negative reviews and vote down positive reviews.

    I thought it especially ironic that the PT post asked people to vote up Donald Prothero’s review, especially since he seems to be one of ones who gives no indication that he has even read Meyer’s book.

    After Prothero posted his “review,” David Berlinski wrote him a letter asking for another one just like it for his own book, The Devil’s Delusion.

    Note the original Amazon link to Prothero’s review seems to be broken, but a copy of the text can be found here.

  10. woodchuck64 says:


    what is wrong with DI requesting that people read the book and submit an honest review of it

    I didn’t say there was anything wrong with it. I did, however, say that these accusations of review “crashing” (is there a better word?) must be taken into account when attempting to analyze reviewers.

    In posting DI’s e-mail requesting reviews for the book, it’s only fair that you should mention the posts on Richard Dawkin’s website and Panda’s Thumb asking their followers to vote up negative reviews and vote down positive reviews.

    I did, indirectly, when I mentioned that the propagation of DI’s plea would likely (and did) result in ID opponents trashing the book even further to balance what they perceive as a flood of biased positive reviews.

    The links you post were clearly in response to the DI’s note, that is, the DI seems to have started the whole thing. Do you know what the DI is referring when they refer to “gaming the ratings system at Amazon”? They obviously don’t think they started it.

    But keep in mind that my point is not who’s right and who’s wrong, but rather that an accurate View of Reviewers of “Signature in the Cell” must take into account this war of accusations and counter-accusations.

  11. Good observations on the reviews of this book. I wonder how many of the negative reviewers (who haven’t even read the book) would be self-described as “objective”…

    The Followers Church in Post Falls ID

  12. Kendalf says:

    I’ve been thinking through Ayala’s review. He uses many of the same theological arguments that he made in his debate with William Lane Craig on the viability of ID. These arguments were unconvincing then, and they are still unconvincing to me now. I’ve written up an additional response to some of Ayala’s points regarding design flaws.

  13. Holopupenko says:

    Please be wary of Ayala’s interpretations…

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