random($foo)

[The Congress shall have power…]

To promote the progress of science and useful arts, by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries;

— U.S. CONST., art. I, § 8, cl. 8

• When Rights Collide: Principles to Guide the Intellectual Property Debate
• National Information Infrastructure, Pt I Law, Purpose of Copyright
• The Purpose of Copyright, by Lydia Pallas Loren
• Control & Creativity by Lawrence Lessig