I really like Andrew Plumb‘s distillation of the Open Source Hardware (OSHW) Draft Definition version 0.3.  I’d hate to see it get lost in Twitter history, so here it is:

1. Documentation: Establish & facilitate the right to repair.
2. Necessary Software: Operates using Free Open Source Software.
3. Derived Works: The right to fork the project.
4. Free Redistribution: Pay for parts, not permissions. No restrictions on the sale of parts.
5. Attribution: Give credit where it’s due.
6. No Discrimination Against Persons or Groups: Respect is earned.
7. No Discrimination Against Fields of Endeavor: Make recommendations, not restrictions.
8. Distribution of License: Share Alike.
9. License Must Not Be Specific to a Product: The right to re-use.
10. License Must Not Restrict Other Hardware Or Software: Play well with others.
11. License Must Be Technology Neutral: The right to modify.

Edit:  See more amazing distillations, machinations, imaginations, and mastications at the Clothbot wiki!