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人為某樣東西實際支付的成本至少是標價的兩倍，因為買來后設置、學習、維護、修理，以及最后處置，也需要耗費精力、時間和錢。不是所有的實際成本都在價簽上。實際成本是標價的2倍。

Sometimes you have to be knocked down lower than you have ever been to stand back up taller than you ever were.

"The colony is the place where the project of a new humanity is to be tested, where the dream of a world without borders is to be realized, where the dream of a world without races is to be realized, where the dream of a world without nations is to be realized, where the dream of a world without classes is to be realized, where the dream of a world without genders is to be realized, where the dream of a world without religions is to be realized, where the dream of a world without money is to be realized, where the dream of a world without property is to be realized, where the dream of a world without war is to be realized."