I really like this show so far. It's thought provoking. Future humans or aliens still can't be ruled out. Clearly who or what is controlling the narrative wants certain moments in time/history to be altered by these passengers. To what end though? Is it just a goodwill type of show, to help out those in need or is there a deeper point to it like the future has gone to hell and certain little moments in history need to be fixed to help it? The premise as of now is very reminiscent of the Travelers on Netflix.