But copying, quoting, and generally re-using existing cultural material can be, under some circumstances, a critically important part of generating new culture. In fact, the cultural value of copying is so well established that it is written into the social bargain at the heart of copyright law. The bargain is this: we as a society give limited property rights to creators to encourage them to produce culture; at the same time, we give other creators the chance to use that same copyrighted material, without permission or payment, in some circumstances. Without the second half of the bargain, we could all lose important new cultural work.
