Magicians and IP at Freedom To Tinker

An old post at Freedom To Tinker. Ed Felton discusses Jacob Loshin's Secrets Revealed: How Magicians Protect Intellectual Property Without Law. Some interesting discussion in the comments. 

You can read the Loshin paper in its published form at Jacob Loshin, Secrets Revealed: How Magicians Protect Intellectual Property Without Law 123 Law and Magic (Christine A. Corcos, ed., Carolina Academic Press, 2010).