It’s weird to invent a machine to intentionally meddle with past events, if your current present isn’t a disaster. Different argument if there was a massive disaster, war, plague, whatever that they were trying to use time travel to avoid somehow, but if things are ok, or even ok-ish, screwing with the past 40-50 years of history and making intentional changes is a big gamble. Butterfly effect and all that, but who knows which change he makes ends up killing everyone? Saved a nice woman, who raised a nice kid, who saved someone from a car wreck who goes on to be the next Hitler. Know the theory was small changes, kindness, etc, but they can only see as far as Al’s present, so who knows the damage they could be doing? Other than the implication that God was steering things, but along those lines, what does God need with a time machine? Either omnipotent or he’s not…