Boeing doesn't take the current hub-and-spoke model as a given.

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When you work this long with someone you tend to take the best parts of the other and use them as a model to work on yourself.

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Designing a band is much the same as designing any other product: take a basic, successful model and adapt it.

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Many hedge funds take 2% of assets in administrative fees and 20% of annual profits, a model Mr. Buffett has criticized as offering pay for nonperformance.

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