2. No one ever says, "I'd probably be so shocked I would stand there watching and screaming, not
knowing what to do because seriously, who expects to see that?"
Or, "I would literally not believe what I was seeing, and I'm sure my brain would be so busy thinking up a plausible explanation to deal with the sight of someone seconds away from being hit by a train that I would not be able to move."
Or, "I'm pretty sure that in the half-second of being able to make a decision, I would think first of self-preservation and more about how I can get away from a scary person-pusher than pulling the guy from the path of the oncoming train."
But it would be a lot more honest. Interviewing people on the platform days later is just stupid and a waste of time.