An expert on rationality, judgement, and strategy, Julia Galef notes that “our capacity for reason evolved to serve two very different purposes that are often at odds with each other. On the one hand, reason helps us figure out what’s true; on the other hand, it also helps us defend ideas that are false-but-strategically-useful. I’ll explore these two different modes of thought —I call them “the scout” and “the soldier”— and what determines which mode we default to. Finally, I’ll argue that modern humans would be better off with more scout mode and less soldier mode, and I’ll share some thoughts on how to make that happen.” Galef is founder of the Update Project and hosts the podcast “Rationally Speaking.” “Soldiers and Scouts: Why our mind weren’t built for truth” was given on September 12, 02018 as part of Long Now’s Seminar series. The series was started in 02003 to build a compelling body of ideas about long-term thinking from some of the world’s leading thinkers. The Seminars take place in San Francisco and are curated and hosted by Stewart Brand. To follow the talks, you can: Subscribe to our podcasts: http://longnow.org/seminars/podcast Explore the full series: http://longnow.org/seminars More ideas on long-term thinking: http://blog.longnow.org The Long Now Foundation is a non-profit dedicated to fostering long-term thinking and responsibility. Our projects include a 10,000 Year Clock, endangered language preservation, thousand year+ data storage, and Long Bets, an arena for accountable predictions.