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It's silly to provide a "read an excerpt" link that is just the generic intro-to-this-book copy that's approximately reproduced on the page that contains said link. "Hackers like to optimize things." Gee, thanks for that.

Excerpts should be meaty: show me what's going on in the third section of chapter 6. I may not understand all the prerequisites, but I can at least judge whether anything is actually happening in this book, before I give you money.

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