Its not as easy as commenting on Bulletin boards

First of all courage is needed.

Then... to decide your own safety... is it safe enough to "go in"? All this, in cases like the above, including what action to take... have taken to be taken within 3 to 4 seconds.

I think it was wise on the photographer's part to not go in... or in desperation the guy would have pulled him down... and this I have seen happen with my own eyes... (The guy who came to save was pulled down and the victim jumped up on the platform and ran away.... but luckily 3 to 4 guys came together to pull this guy up also... this was possible as the approaching train was very very slow...)

Also possibly he was clicking the train... when this bloke decided to walk the track... cause there would have been hardly any time to take out phone/camera, open keypad lock, go to camera, by the time the camera focuses... the action would have taken place... I guess this whole finding the camera, booting up, aiming, focusing etc thing would take at least 10 seconds to ...