On 2005-03-10, Ben Lehman wrote:
We need need need to seperate out two roles:
Critic—person who says "no, that's dumb, let's do this." This is usually the GM. Also, the person who says "yeah, that's cool!" The arbiter of cool, essentially.
(In Polaris, this is the role of the Moons.)
Shit-giver—person who gives opposition, gives the character things to do, to make the character cooler. This is, usually, also the GM, but it is a different role.
(In Polaris, this is the role of the Solaris Knight / Ice Maiden.)
So that's that.