from "The Four Freedoms of an Empowering Software Development Environment" by Norman L. Kerth (available at
http://c2.com/doc/ppm.pdf):
- freedom to recognize and observe what is rather than what others want you to see,
- freedom to ask about puzzles,
- freedom to acknowledge and talk about what's coming up for you,
- freedom to talk about not having any of the above freedoms.