Economics Professor Backs Technology to Protect Copyrighted Materials

Stan Liebowitz, a professor of managerial economics at the University of Texas at Dallas, argues in support of technologies that limit consumers' access to copyrighted material in a forthcoming book tentatively titled Internet Cents and Nonsense (Amacom Books). Unlike many intellectual-property scholars, Mr. Liebowitz says that such "digital rights management" technologies would not give too much power to the creators of new works.

Q. How would digital-rights management apply to

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