“The true sign of intelligence is not knowledge, but imagination.”
—Albert Einstein

Scene: This really happened . It’s 1983, and the world’s most famous illusionist, David Copperfield, is performing in a worldwide television special—his ninth. This time, he’s in China. Think China, and you cannot help but think Great Wall. Now, with the cameras feeding video across the planet, and with a live audience arrayed on both sides of the timeless landmark, David Copperfield makes his appearance. 

Begun in the seventh century BC, the Great Wall of China extends over three thousand miles and was built to prevent the passage of the most powerful invading armies in history. Copperfield proposes not to storm it or climb over it or travel three thousand miles around it, but rather to walk through it. 

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