Train passengers need to check their train tickets very carefully before boarding their train. If you are intending to travel from Burntisland to Burnley or Warrington to Bangor ask the guard on the train if your ticket will pass stringent security checks.
If you do not, you may suffer the fate of Mr Tom Shaw who was thrown off a train because Snoop Doggy Dog and the Artful Dodger peeked over his shoulder and read what he was writing. It mattered not that he was making a list of songs his band would sing at an upcoming gig, it was the words he used. One of the words being "Killer" condemned the guy as dangerous and to a premature hasty exit from his train.
Any suggestion that the train operators are looking for ways to make passengers pay twice for the same journey cannot be confirmed.
Do you read "Gun" magazine or the soccer favourite "Shoot"? Don't read these on the train. Security guards on trains have attended highly secret courses at "a secret location". Here they are given "trigger oops wrong word, off the train now sir please!" word association lessons.
Out are, bullet train, magazine article, kamikaze for beginners, ice cream bombe making for the terrified and Battlestar Galactica. FinalFantasy in any format is to be used under extreme caution.
Please, do not try to finish off your Chemistry or Nuclear Physics homework on a train.