Electromagnetic spectrum which enables wireless communications is both scarce and in high demand. Until now, deciding who can use a particular frequency has been a zero sum game. The government auctions it off, and the winner has it for keeps. My next guest says the current spectrum management process is unsustainable. She led a major MITRE Corporation study, which suggests what it calls a dynamic approach to spectrum management. MITRE's chief spectrum economist Carolyn Kahn joins me now.

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