Comment: Nope, not Heinlein.

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In reply to comment: Was it Heinlein who wrote (see in situ)

Nope, not Heinlein.

Eric Frank Russell wrote it -- The Great Explosion is the title. Wonderful story, longtime favorite of mine. And it's not libertarian; it's anarchist, straight up.

Recommended reading: The Most Dangerous Superstition by Larken Rose