Missing the basic logic, repeatedly, with so many question marks

Rating: Null/10 (10 February 2018)

Funny thing is I don't know how could a bunch of people would be able to synchronize so easily to commit a revengeful organized crime together without smart phones, Twitter, Facebook, WeChat, Line, or even a more primitive BBCall device? These people are at different social and financial levels, but they could all afford to travel abroad, get on a river boat first, then aboard the most luxurious, expensive "Oriental Express".
How they communicate with each other,?
How they assign themselves with different tasks and roles to target just one person?
How they can all timely meet the timetable to carry out the final act?
They are not related to each other, they don't even know each other's relationship to the victimized person, yet every one of them loved and so loyal to the deceased guy and vowed to revenge him for the injustice.
Who's the major planning person?
Who designs this big avenging project and murder plan?
Who provides the logistic and financial supports?
How they communicate with each other on a train if they don't smart phones through the texting method? Yet they can so smoothly get together to organize a massive murder, everybody can share the last revenge act. How come?
You tell me. If you could buy such ridiculous scenarios adapted from such ridiculous novel, and take everything for granted, what can I say?