 There are at least two replies to this sort of worry. First, the problem may be addressed by adopting specific legal rules. For example, current Anglo-American institutions of intellectual property have built in provisions that limit the rights of authors and inventors. These limitations, for example “fair use” (17 U.S.C. §107) and “first sale” (17 U.S.C. §109(a)) allow individuals to use a patented or copyrighted work for personal use, non-profit, or educational purposes. Under current law it is permissible to make back-up copies of computer games or to copy a chapter of a book from the library. Perhaps these kinds of limitations could be built into the bargain between society and those who create intellectual works.