As far as I understand, the BART map was supposed to show that if an inhabitant of four different towns was returning by plane via the SFO airport, then the first few minutes wouldn’t let one understand where the inhabitant lives. Similarly, both Christians and hedonic utilitarianists would steer the world from the Holocaust to donating to charity and realise that their actual goals diverge (e.g. in deciding whether to donate to a Catholic hospital or to fight factory farming).
As far as I understand, the BART map was supposed to show that if an inhabitant of four different towns was returning by plane via the SFO airport, then the first few minutes wouldn’t let one understand where the inhabitant lives. Similarly, both Christians and hedonic utilitarianists would steer the world from the Holocaust to donating to charity and realise that their actual goals diverge (e.g. in deciding whether to donate to a Catholic hospital or to fight factory farming).