Excerpt from The Know-It-All by A. J. Jacobs, plus links to reviews, author biography & more

Chapter One: A

That's the first word in the Encyclopaedia Britannica. "A-ak." Followed by this write-up: "Ancient East Asian music. See gagaku."

That's the entire article. Four words and then: "See gagaku."

What a tease! Right at the start, the crafty Britannica has presented me with a dilemma. Should I flip ahead to volume 6 and find out what's up with this gagaku, or should I stick with the plan, and move on to the second word in the AA section? I decide to plow ahead with the AAs. Why ruin the suspense? If anyone brings up "a-ak" in conversation, I'll just bluff. I'll say, "Oh, I love gagaku!" or, "Did you hear that Madonna's going to record an a-ak track on her next CD?"

 

a cappella

A lovely surprise. I know exactly what this is -- an ex-girlfriend of mine belonged to an a cappella group in college. They sang songs from Def Leppard and called it Rockapella. One for two. Not bad.

 

Aachen

The next few entries destroy my average. I don't recognize the names of any Chinese generals or Buddhist compendiums. And I've never heard of Aachen, the German city that's home to Schwertbad-Quelle, the hottest sulfur spring in the country. I try to memorize the information. If my goal is to know everything, I can't discriminate, even against obscure Teutonic landmarks.

 

Aaron

I move on to Aaron, the brother of Moses. Seems he was sort of the Frank Stallone of ancient Judaism. The loser brother, the one Mom didn't talk about too much. "Oh, Aaron? He's doing okay. Still finding his way. But back to Moses. Did you hear about the Red Sea?"

This is good stuff. I'm Jewish, but I never got any religious training, never got a bar mitzvah. I know most of my Jewish lore from Charlton Heston movies, and I wouldn't call myself observant, though I do have a light lunch on Yom Kippur. So the Britannica will be my savior, my belated Hebrew school.

 

Abbott, Bud, and Costello, Lou

After a bunch of Persian rulers named Abbas, I get to these two familiar faces. But any sense of relief fades when I learn about their sketchy past. Turns out that the famed partnership began when Costello's regular straight man fell ill during a gig at the Empire Theater in New York, and Abbott -- who was working the theater's box office -- offered to substitute. It went so well, Abbott became Costello's permanent partner. This is not a heartwarming story; it's a cautionary tale. I'm never calling in sick again. I don't want to come back after a twenty-four-hour flu and find Robbie from the mail room volunteered to be the senior editor. It's a tough world.

 

ABO blood group

Stomach cancer is 20 percent more common in people with type A blood than those with type B or type O. That's me, type A. This is even more disturbing than the tale of the backstabbing Costello. Clearly, I have to be prepared to learn some things I don't like.

 

Absalom

Absalom, a biblical hero, has the oddest death so far in the encyclopedia. During a battle in the forest, Absalom got his flowing hair caught in the branches of an oak tree, which allowed his enemy, Joab, to catch him and slay him. This, I figure, is exactly why the army requires crew cuts.

 

Acoemeti

A group of monks who provided nonstop choral singing in the 5th century. They did it with a relay system -- every few hours, a fresh monk would replace the exhausted monk. I love this image, though I am glad I wasn't their neighbor. We're talking twenty-four-hour entertainment long before MTV went on the air. Quite possibly before Mick Jagger was born.

From The Know-It-All by A.J. Jacobs.  Pages 7-30 of the hardcover edition.  Copyright © 2004 by A.J. Jacobs