Wouldn't you also like to go back 30 years in the business world, knowing what you know now?

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Being smart matters, but knowing what you need to know may ultimately be more important.

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Knowing what a case presents allows you to know where the innocent billing error comes from.

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They used to do movies but now they do advertising, so if you go and see them knowing that they did Gladiator you wouldn't know what they are up to now.

BBC: Making it big in the movies

Knowing what other shoppers were offered can let you know whether the fare you're offered is a good deal or not.

WSJ: To Take the Hassle Out of Traveling, Pack These Apps

Sometimes knowing what you want doesn't mean you know how to make it happen or how to communicate it to an audience.

WSJ: The World of Filmmaker Wes Anderson

You have the luxury of not knowing what we know.

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You could know in advance how something would move or act by knowing what it was.

NEWYORKER: Moon Man