"At any given period in history the ideas of the common mind are found to antedate the facts. The facts of the twentieth century are approached with the ideas, feelings, prejudices of the tenth."

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All of the progress that the US has made over the last couple of centuries has come from unemployment. It has come from figuring out how to produce more goods with fewer workers, thereby releasing labor to be more productive in other areas. It has never come about through permanent unemployment, but temporary unemployment, in the process of shifting people from one area to another.

— Milton Friedman