Boyle, J. (2008). The Public Domain: Enclosing the Commons of the Mind. New Haven and London: Yale University Press (online edition under CC BY-NC-SA 3.0).

Key takeaways

From the reading, NOTE-1021.

  • The Jefferson Warning. Ideas are nonrival. Rights over them are a state-made monopoly, not a natural right. They should last no longer and reach no further than the incentive needs. The hard part is drawing the line (ch. 2, pp. 19–22).
  • The second enclosure. Facts, genes, algorithms, business methods and musical fragments are being fenced. The commons of the mind does not suffer overuse, because it is nonrival. Its risk is the anticommons: too many rights over the inputs of the next work (ch. 3, pp. 45–50). Copyright’s triggers, once set off only by industrial competitors, can now be “activated by individual footsteps” (p. 52).
  • The holes matter as much as the cheese. Fair use and other limits are part of the grant, not leaks in it (p. 69). The “Sony Axiom”: “cheaper copying makes the limitations on copyright more rather than less important” (p. 71). Without them, control over content becomes control over the technology of copying.
  • Music as the test. “I Got a Woman” was made by rewording a 1951 gospel record. “Gold Digger” loops it, and The Legendary K.O. sample that for a song about Katrina. Much of what founded soul would be illegal under today’s law and licensing culture (ch. 6).
  • Evidence and openness. Europe’s database right produced a one-time spike, then fell behind the US, which has none (ch. 9). The book names an “openness aversion”: we systematically undervalue open systems (p. 231). Its remedy is a movement modelled on environmentalism (ch. 10).

Standing in the record

Filed on 2026-10-20 at the owner’s request, after Lessig’s Remix (LIT-1298), as the second work on copyright and remix. The two books appeared the same year and Boyle thanks Lessig as his main influence (p. viii). Read them together. Lessig argues from the economies that could sustain remix. Boyle argues from the history of intellectual property and from the public domain. Boyle’s chapter 6 gives a second, independent account of why sampling needs the original recording (p. 150), next to Lessig’s (Remix, pp. 74–76). The book cites Ostrom’s Governing the Commons (LIT-737) only in its notes; how it relates to Ostrom’s commons (LIT-719) is set out in the reading.