You proudly proclaim what the players knew, and proclaim that obviously they knew enough not to waste fifteen minutes of game time pursuing nothing at all. Technically they didn't know it was a dead end, but you claim that they knew enough to know they shouldn't pursue it.
I never said that the players knew the pipes were a dead end.
What the players were given was the observable information around them.
Based on this information, two players wanted to go up the pipes. The remaining three were staunchly against the idea.
But obviously you are wrong.
I just described what the players saw. I have simply communicated to readers on the forum what information the players had before they committed themselves, as well as drawing the readers attention to the fact that the party members were prepared to committ a 3-5 hour journey (in the worlds time) and split the party for a minimum of that time.
It wasn't about me being right or wrong.
The players are free to make whatever decisions they want.
If they HAD known, they wouldn't have wasted the time. The fact that they pursued the red herring for so long conclusively proves that they didn't know it was a red herring.
Fair enough, if they HAD known that all the orcs in the citadel were dead or dying because the dwarves spiked their water with poison, the players wouldn't have wasted their time climbing up the mountain in the first place (This didnt actually occurr btw)...
If they HAD known that a +10 Vorpal Greatsword was buried along with 100,000 gp just 1 km away, unguarded, they would not of climbed the mountain...
If they HAD known that the god of madness would destroy all other gods in 2 years time and subsequently kill all life on the planet, they would of stayed in the local taven, gotten drunk alot and 'entertained' some lady/man friends all day long...
My negligence in this matter is starting to be apparent to me. I haven't told the players anything about what they HAD to know,...
DMs, particularly DMs with simulationist bents, tend to forget that the game world exists only within their head. And by "their head," I mean the DM's. Not the player's. The details of the game world have to get from the DM's head to the player's heads, and that doesn't always go as well as you think. Clearly, in this case, you failed to get across what you had hoped to get across.
I just described what the players saw and what they experienced in the tunnel (eg, slime on the walls, the cramped conditions etc).
The proof is undeniable- had you communicated what you intended, this never would have happened; it did happen, therefore, you did not communicate what you thought.
You are absolutely 100% right in this aspect. It is not my job to communicate what 'I' think. I'm not a player. Its up to the players to act on what 'they' think,..classic DM error, I know,..especially the DM's with a simulationist bent...but we all have our burdens I guess.
At least in this situation you only lost fifteen minutes of game time.
What? No comment about the players splitting/weakening the party for 3 hours in the game world? Nah, why would we talk about that,...
Change a few words, and your post becomes a classic "The TPK was totally the players fault and not mine and they're mad at me anyways!" post. We see those about every other week around here.
Yep, correct here as well,...and I'd be mad at them for taking actions that, despite the observable information provided, they nonetheless took that resulted in a TPK. I wouldn't stop them though, or tell them what I think,...there's an orc army out there, if they stroll into it, the 'great sheltering hand of the DM' won't protect them,...they'll get ripped to pieces unless the players provide a damn good reason they shouldn't be.
My apologies for the delay and tone of this reply. It's not my intention to cause offence to you personally, just to attack your argument.