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-... and that's the book review that I would _prefer_ to write. A science review of a science book, for science nerds: the kind of thing that would have no reason to draw your attention if you're not _genuinely interested_ in Mahanalobis _D_ effect sizes or adaptive introgression or Falconer's formula, for their own sake, or (better) for the sake of [compressing the length of the message needed to encode your observations](https://en.wikipedia.org/wiki/Minimum_message_length).
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-But that's not why you're reading this. That's not why Murray wrote the book. That's not even why _I'm_ writing this. We should hope—emphasis on the _should_—for a discipline of Actual Social Science, whose practitioners strive to report the truth, the whole truth, and nothing but the truth, with the same passionately dispassionate objectivity they might bring to the study of beetles, or algebraic topology—or that an alien superintelligence might bring to the study of humans.
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-We do not have a discipline of Actual Social Science. Possibly because we're not smart enough to do it, but perhaps more so because we're not smart enough to _want_ to do it. No one has an incentive to lie about the homotopy groups of an _n_-sphere. (The <em>k</em><sup>th</sup> group is trivial for _k_ < _n_, and isomorphic to the integers thereafter. _You're welcome._) If you're asking questions about homotopy groups _at all_, you almost certainly care about getting _the right answer for the right reasons_. At most, you might be biased towards believing your own conjectures in the optimistic hope of achieving eternal algebraic-topology fame and glory, like Ruth Lawrence, but nothing about algebraic topology is going to be _morally threatening_ in a way that will leave you sobbing that a malicious God created the universe as a place of evil, or fearing that your ideological enemies have siezed control of the publishing-houses to plant lies in the textbooks to fuck with your head.
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-Okay, maybe this was a bad example; topology in general really is kind of a mindfuck. (Remind me to tell you about the long line, which is like the line of real numbers, except much longer.)
+There are also some appendicies at the back of the book! Appendix 1 (reproduced from, um, one of Murray's earlier books with a coauthor) explains some basic statistics concepts. Appendix 2 ("Sexual Dimorphism in Humans") goes over the prevalence of intersex conditions and gays, and then—so much for this post broadening the [topic scope of this blog](/tag/two-type-taxonomy/)—transgender typology! Murray presents the Blanchard–Bailey–Lawrence–Littman view as fact, which I think is basically _correct_, but a more comprehensive treatment (which I concede may be too much too hope for from a mere Appendix) would have at least _mentioned_ alternative views ([Serano](https://rationalwiki.org/wiki/Intrinsic_Inclinations_Model)? [Veale](/papers/veale-lomax-clarke-identity_defense_model.pdf)?), if only to explain _why_ they're worth dismissing. (Contrast to the eight pages in the main text explaining why "But, but, epigenetics!" is worth dismissing.) Then Appendix 3 ("Sex Differences in Brain Volumes and Variance") has tables of brain-size data, and an explanation of the greater-male-variance hypothesis. Cool!