In addition to being plausible, a suggestion
must be acceptable to the GM and the other players. In general, the GM
should go along with suggestions that are imaginative, that move the
plot forward, or that save a PC’s life. The GM should not approve a
suggestion that would short-circuit the plot, contradict a previously
established fact, or harm or steal the scene from another PC. In borderline cases, the player and GM can negotiate.
The GM should make a note of any element added using this rule, as
it becomes a permanent part of the game world!