Julian Sanchez writes:
The law normally advances by small and cautious steps—by the gradual extension of established precedents and rules to novel problems and fact patterns. Little wonder, then, that tricky questions of law often amount to conflicts between competing metaphors. Is a hard drive like a closed briefcase whose contents are all fair game for police once the “container” is legitimately opened? Or is it more like a warehouse containing hundreds or thousands of individual closed containers? If the latter, what are the “containers”? Directories? Individual files?
A similar metaphor war figures in the FBI’s effort to expand its authority to acquire information from Internet Service Providers using National Security Letters, which are issued by agents without judicial oversight, and typically forbid providers from disclosing anything about the demand for records.
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