Some sort of freaky mind-reading thingy going on there! Anyone else notice that the train is full of nude women? Greg
Seriously, am I the only lone who suspects the clip just reverses from time to time? C'mon! It's one of those "if it's on the internet, it's gotta be true things" right?
Nope, you look at it and think forward and reverse, time it. works every time. Example. pick a counting number when you will think reverse, then count to that number and then think reverse, back the train goes!
I think loon nailed it, how you perceive it depends on your eye dominance and when you switch the train goes the other direction.