50. See Jane C. Ginsburg, Putting Cars on the Information Superhighway: Authors, Exploiters, and Copyright in cyberspace, 95 Colum. L. Rev. 1466, 1488 (1995) (concluding that authors enjoy rights whose effective enforcement in cyberspace is today rather uncertain); David G. Post, New Wine, Old Bottles: The Evanescent Copy, Am. Law., May 1995, at 103.