The problem of the Surveillance State is not so much what it knows as what it can do with what it knows. The Surveillance State is dangerous not so much because it violates some standard of privacy, but because surveillance fuels control. Once in place, a high level of everyday surveillance, like a fixed cost, implies a low marginal cost of information; it makes control less costly and more tempting for the state. When the cost of something decreases, its users want more. The more the state knows, the more controls it will enforce in the future.
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