How can I resolve the contradictory rules on what tests can be substituted with Mouse Nature?
Mouse Guard p. 232: under “Acting with Your Nature”, the rules say “When action in the game involves escaping, climbing, hiding or foraging, you can roll your Nature instead of a skill at no cost.” No problem there.
Mouse Guard p. 233: under “Acting Against Your Nature”, the rules say “If your character is in a situation that is against his Nature — fighting, researching, arguing, etc. — and doesn’t have the proper skill, he may make the test using his current Nature rating.” The emphasis on “skill” is in the original.
Mouse Guard, p. 95: under “Beginner’s Luck”, the rules say “Nature can be used as a substitute for any ability or skill that you don’t have.”
On the Character Sheet, the “Nature Rules” say “Acting against Nature: Use Nature in place of any ability or skill, if test is failed, Nature is taxed by the margin of failure.” Again, the emphasis is in the original.
The main section on Nature contradicts the other parts of the rules on this. The Nature rules explicitly say that only a skill test can be substituted by Nature (whether acting with or against Nature); the other parts explicitly allow “any ability or skill” to be substituted by Nature, if acting against Nature. At least one of them needs to be fixed :-)
This is all separate from using a Persona to Tap Nature, which adds Nature to the dice rolled. That's not a problem, it's quite clear for me.
Instead, this is about substituting Nature for another rating. So what's the correct answer: What can Mouse Nature be substituted for?