SURPRISE: The government is neither omniscient nor benevolent:

The political class is incorrigible because it is composed of — let us say the worst — human beings. They respond to incentives of self-interest. Their acquisitiveness is not for money but for the currency of power, which they act to retain and enlarge. This class can be constrained, if at all, not by exhorting them to become disinterested but by binding them with a constitutional amendment.

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