Lexicon by Max Barry. Excellent sci-fi novel. In fact I heard of the book from an HN comment (https://news.ycombinator.com/item?id=28199207), checked it out, and loved it.
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FROM THE SHARED SHELF · 2006–2026 SAMPLE
Lexicon
2 readers recommend it across 2 discussions
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THE WORD OF MOUTH
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Original Hacker News comments, in the readers’ own words.