Peter Suber points to new Definition of Free Cultural Works, that, adapting the Free Software Definition, says:
[…] works of authorship should be free, and by freedom we mean:
- the freedom to use the work and enjoy the benefits of using it
- the freedom to study the work and to apply knowledge acquired from it
- the freedom to make and redistribute copies, in whole or in part, of the information or expression
- the freedom to make changes and improvements, and to distribute derivative works
Doing exactly this same exercise, I wrote back in October 2003 what I thought were The four kinds of freedom of free knowledge, namely:
- The freedom to use the knowledge, for any purpose (freedom 0).
- The freedom to study how the knowledge applies, and adapt it to your needs (freedom 1). Access to the source information is a precondition for this.
- The freedom to redistribute knowledge so you can help your neighbor (freedom 2).
- The freedom to improve the knowledge, and release your improvements to the public, so that the whole community benefits (freedom 3). Access to the source information is a precondition for this.
Same thing with only a different approach: Benjamin Mako Hill and Erik Möller focus on content, and I do in knowledge :)