This is why I'm attempting to understand why the Hard No's in the combat pillar are excluded from the definition of MMI.
@
Bedrockgames has a narrow definition of MMI, and then you have a number of posters who ascribe all
Say No adjudications to MMI, but appear to limit the definition to only the social and exploration pillars.
I don't think they ARE excluded. However, combat is traditionally an activity where the PCs are given the widest range of options. Heck, an AD&D fighter has, basically, NO options that are defined by rules outside of combat! Inside combat he has at least 3-5 basic options at any given time, maybe considerably more, that are covered by the rules (at least to some extent).
The point is, if the DM says "no you cannot aim at the neck of the snake and cut its head off using a called shot." that is simply a rules adjudication, it isn't allowed by the rules. It might also be a 'no' to what might be considered possible under some circumstance, depending on the game, DM, etc. In any case, this isn't removing all good options from the PC, nor thwarting them from continuing on basically the same course (IE killing the monster, etc.).
I don't disagree that saying "no the sect is not in the tea house, period" is not definitively of a different character. There are plenty of other equally convenient places to search, there isn't a hard time constraint, etc. OTOH it falls outside the normal context of 'say yes or roll dice'. I would note that 4e D&D has a 'SYORTD' rule, and it also has page 42 for doing arbitrary actions. So you can try most anything in 4e and there is at least a general rule system to handle that. This is typical of this type of game, there is little need to say 'no'.
Saying Yes though is DM adjudication. This sentence seems to imply you prefer rolling than having a DM automatically Say Yes?
Well, I was stating a preference for how I would approach AD&D play. 'say yes' is fine in AD&D too, sometimes. It just isn't coherent with challenge the player type game play, so it is likely to only come up when the DM deems the task trivial. Either nothing is at stake, so we really don't need to talk about 'yes' that much, or we do need to roll! 2e is an awkward game to talk about, because it has issues with what it thinks the play process is.