I said the default assumption in D&D is that the DM has ultimate authority over the game.
The default assumption in D&D is that the DM has ultimate authority over any game he runs. I would not presume to tell a DM that he
couldn't fudge die rolls for that reason, although I would
advise strongly against it if asked (such as in this thread).
That said, another default assumption in D&D is that if the DM abuses that authority, he will perhaps be running fewer games. As you say, "How one applies that authority is the topic of discussion", which does not mean that fudging is okay simply because the game grants the DM authority to do so.
As I said upthread, 2e not only granted the authority to do so, it specifically suggested doing so. I read the advice given to 2e DMs, and eventually ran a game where I followed it. Following that advice caused me, for the first time, to feel like a bad DM. It took away the excitement of what was happening in the campaign milieu. Because (IMHO and IME) players can always tell when the DM is hand-holding, it damaged player satisfaction. It destroyed my interest in the game. Indeed, I stopped playing the game for a period of about 3 years, until 3e sparked my interest again.
Never again will I go down that route.
Most of them feel that such an announcement would serve to break suspension of disbelief, and generally throw a monkey-wrench in dramatic tension.
Umbran, thank you for asking them. That's a good, pretty basic answer. Why would such an announcement throw a monkey-wrench in dramatic tension?
I think RC was suggesting that in his example there were no meaningful choices because there really was no choice. Left or Right were really both Straight because the "fudging" taking place was of the railroady kind, rather than the die-shifting kind. Moreover, it seems his point is that if you place a lair in hex 8G, it's there whenever and however the PCs wander into that hex, even if they are short on resources and just hoping for a safe place to camp.
Yes.
But let us say that it is a dungeon crawl, and let us say that I am thorough. As soon as I finish off whatever happens to be to the left, I come back and go right. And then......?
RC