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Actually I’m a fan of algorithms questions! Of course, getting an engineering staff full of IOI medalists is a wonderful situation and will attract more talent. But I and others here are recognizing the role played by practice and grinding on this specific flavor of problem. The author states that intelligence is unchangeable and divides candidates into talent bands - but actually, his test is significantly impacted by factors other than intelligence. His framing is just weird, to be honest. “People who think faster than they can type” isn’t really a meaningful category, yet he’s turned it into a theology of interviewing.