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  • Dinosaurs are extinct today because they lacked opposable thumbs and the brainpower to build a space program.

    Neil deGrasse Tyson
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    Neil Degrasse Tyson (2010). “The Sky Is Not the Limit: Adventures of an Urban Astrophysicist”, p.66, Prometheus Books
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Dinosaurs are extinct today because they lacked opposable thumbs and the brainpower to build a space program. - Neil deGrasse Tyson
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