EzekielRaiden
Follower of the Way
As noted above: I don't really consider it a "railroad" if it's a linear adventure that, at every step of the way, you did the "right"/"correct" thing because that was what was most reasonable, entertaining, or interesting to you. Linearity is not the enemy. The false impression of openness, when the adventure is actually closed, is what is really the enemy.For myself, although I may be branded a heretic here, I still say, "if the railroad goes to Awesometown, get me onboard."
The false impression of openness is what allows a linear adventure to pretend to be a nonlinear/multi-linear adventure, and so linearity is one factor. But it, by itself, is no more offensive than wandering monster tables, or milestone XP, or a variety of other DMing tools. Hence why every thread I've ever commented in about railroading and fudging has emphasized the false impression, deception, or trickery stuff. Because that's where the real problem has always lain.