Mustrum_Ridcully
Legend
But there is also the player perspective.That said, I personally think that the DM should avoid thinking "Aw man! In the next scene I was gonna have the PCs fight a running battle on the rooftops with the serpent cultists! What am I gonna do now?" The more the DM forces events to follow his encounter order/plot line, the less the players are allowed to actually accomplish.
"Huh, I had this 2 page background for my character, and now he died due to some random Kobold encounter! I so hoped for exploring what happened to my mentor!"
"Okay, we would prefer to find the Treasure Vault of King Leorna, but since Bobs Fighter has just contracted Mummy Rot, we need to find a healer first that casts Remove Disease on him. If Jack would have played a Cleric, we wouldn't have this problem!"
"We have only 2 days to stop the ritual! But Bob took a critical hit and we can't go on without him. We have to rest another day!"
It's not only about DM rail-roading the party into a specific plot. It is about avoiding anything but the players (which include the DM) decide their pacing and the directions they want to go. Yes, there should be penalties for failures (and a sense of "failure"), but they need a certain DM and/or player control.