John Authers, Columnist

Hitchhiker’s Guide to the Equity Risk Premium

Want to know the secret of the investing universe? You can pick a number between one and 10 and get lucky, or you can read this.

The truth is out there.

Photographer: Hubble Space Telescope photo by NASA/Getty

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In The Hitchhiker’s Guide to the Galaxy, a giant computer called Deep Thought is programmed to calculate the answer to the ultimate question of life, the universe and everything. Millions of years later, its circuits finally reveal the answer to the humans who have been agog with anticipation: 42.