Well, it does tell a single problem that has, as far as we know, only happened once in over 40 years. Hardly a reason to go running to the woods or being convinced that the sky is falling. If you're driving down the road and have a flat tire does that mean the you junk the car or do you fix the tire. That is all that was, no one was hurt and if anyone stepped outside the door when it was moving was probably dumber then a bucket of rocks so no great loss. Would it have been better to stop the train and make people climb down on firemen's ladders when all they had to do was stay away from the door until it got to the station and then unharmed stepped off the train with no delays, but, an interesting story. It could have been a serious situation, but, it wasn't and the right choice was made because fortunately the train contained a few guest with working common sense. Let's say they did stop the train... what do you think would have happened and while we are at it, exactly how does one anticipate a mechanical failure that has never happened before and is unlikely to every happen again? That could happen to a brand new train, there is no other connection other the mechanical breakdowns happen.