A lot of the plot made no sense. Perhaps I think too much. The rich people in first class seem to not understand that they are too old and to ensure the survival of a genetically diverse human species. The whole set up of the train is disaster prone. Whoever built the train, Melanie, has fairly poor risk assessment capabilities, events like keeping all the cattle in one place and having easily breakable windows, making enemies and not allies etc... The whole show is too far removed from reality.