+> To say that groups of people differ genetically in ways that bear on cognitive repetoires (as this book does) guarantees accusations that I am misuding science in the service of bigotry and oppression. Let me therefore state explicitly that I reject claims that groups of people, be they sexes or races or classes, can be ranked from superior to inferior. I reject claims that differences among groups have any relevance to human worth or dignity.
+
+quotes Steven Pinker: "Equality is not the empirical claim that all groups of humans are interchangeable; it is the moral principle that individuals should not be judged or constrained by the average properties of their group."
+
+It gets worse. Intuitively, "The moral principle that individuals should not be judged or constrained by the average properties of their group" seems self-evident—one cries out at the _monstrous injustice_ of the individual being oppressed on the basis of mere stereotypes of what other people who _look_ like them might statistically be like.
+
+I fear my training does not permit me to take the moral principle _literally_ as stated. The problem is _technical_ in nature: something that comes up when you try to understand people on a cognitive-scientific level, the way an AI researcher would understand her creations. (Even while "treat individuals as inviduals" might be a very good _English sentence_ to tell someone if you wanted them to behave ethically and didn't expect them to understand the technical problem I'm explaining.)
+
+When you "treat individuals as individuals", you do so on the basis of evidence about that individual's traits. If you see someone wearing an Emacs tee-shirt, you'll assume they probably use Emacs, and probably make and make use of all sorts of other implicit probabilistic predictions about them, in the sense that you [anticipate](https://www.lesswrong.com/posts/a7n8GdKiAZRX86T5A/making-beliefs-pay-rent-in-anticipated-experiences) or dis-anticipate different behaviors from them than you would of someone who was _not_ wearing an Emacs tee-shirt, and those anticipations guide your decisions.
+
+[conditional probability "Emacs shirt" vs. "is female", no principled distinction]