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

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The Know-It-All

One Man's Humble Quest to Become the Smartest Person in the World

By A. J. Jacobs

The Know-It-All
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  • Hardcover: Sep 2004,
    400 pages.
    Paperback: Oct 2005,
    400 pages.

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I flip to Dad's own index to see if I recognize any words. More dense Latinate legalese. And then I spot this entry: "Birds, for the, 1- 894." My mother had once told me about that joke of Dad's, but I had forgotten about it. One of his better ones. But my Lord, 894 pages of text in just one volume -- that's no joke. No wonder he gave up reading the Britannica -- he was writing his own encyclopedia.

This investigation into my dad's oeuvre wasn't particularly good for my self-esteem. The scope and denseness of his work -- those were both envy inducing. But that's not to mention that my dad has made himself the expert on insider trading. Not an expert. The expert. What had I made myself an expert on? The plot lines of the various Police Academy movies? Not even that. Though I haven't read the Britannica's write-up of psychoanalysis, I figure my dad's accomplishments have something to do with my quest to finish the encyclopedia. If I can't beat my dad on depth, at least I can get him on breadth.

 

assault and battery

They're always lumped together, but there is a difference. Assault is the attempt to apply force, battery is the actual application. Look at that -- I'm already getting a legal education. Almost ready for the bar exam.

 

atrophy

A very troubling entry -- all the ways my body is crumbling. The bones are becoming lighter and more porous. Muscles are shriveling. And worst of all, age leads to a striking decrease in the number of living cells in my cerebral cortex. Every day, my brain's surface ridges shrink and the skull fluid swells to fill the space.

The Britannica's passages on evaporating cortexes would disturb most people, but I'm particularly rattled; oddly enough, I've had a long history of grappling with a fear of brain damage. I might as well get this out on the table now. I mentioned earlier on that, growing up, I thought I was smart. Well, that wasn't exactly the whole story. I didn't just think that I was smart. I thought that I was really smart. I thought that I was, in fact, the smartest boy in the world.

I'm honestly not sure how this notion popped into my head. My mom probably had something to do with it, seeing as she was only slightly less enamored of me than I was of myself. And it's true, I did pretty well on tests, sometimes notching up the highest score in the class. As my mom likes to remind me, on one geography quiz, I got so cocky, I wrote "New Joizy" instead of "New Jersey." Ha! In any case, with my handful of good fourth-grade test scores as evidence, I somehow made the logical deduction that no other ten-year-old on planet Earth was my intellectual equal. It's a leap, yes. But in my defense, I hadn't taken any high-level statistics courses. At the time, it just somehow made sense. I could just feel that I was unique in some way (again, my mom told me so). And since I wasn't the best-looking boy or the best hockey player or the best glee club singer, that left intelligence. So what if I didn't always get the highest score? Or even very often? That could be explained away. Maybe I wasn't trying, or maybe the other kids cheated. Deep down, I knew I was top intellectual dog.

Let me tell you, though: being the smartest boy in the world wasn't easy. I didn't ask for this. I didn't want this. On the contrary, it was a huge burden. First, there was the task of keeping my brain perfectly protected. My cerebral cortex was a national treasure, a masterpiece, the Sistine Chapel of brains. This was not something that could be treated frivolously. If I could have locked it in a safe, I would have. Instead, I became obsessed with brain damage.

Danger lurked everywhere. If my skull was touched, that might jostle the brain and squash a few valuable dendrites. So no one was allowed contact with anything above my neck -- that was the holy of holies. No friendly pats on the head. No soccer, with its insane practice on bonking the ball on your pate. And if Grandma came in for a kiss on the forehead, I would dart my head like Sugar Ray Leonard. If I'd known then about the annelid worm -- which can turn its skin cells into brain cells -- I would have been extremely jealous.

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

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