Bathroom Monologue: "You can't be neutral on a moving train." -Howard Zinn

"Of course you can't be neutral on a moving train, you idiot. It's a moving train. But a train moves in one direction. If you walk backwards you still move in the same aggregate direction as the train, merely slower than the other passengers. You can't go left or right unless you jump off, in which case you'll probably kill yourself, and if you survive you'll be stuck in the middle of the wilderness. And then you'll probably have to walk in the same direction the train was going, following its tracks, to get to civilization so that someone can look at your broken arm. You'd have to derail the thing, killing several passengers, just to get it to deviate from the tracks a little, and seconds after derailing it doesn't go anywhere at all. It’ll be neutral."