re #4: There are many instances of people sacrificing themselves to save others, Chernobyl workers, figher pilots not ejecting but steering the plane away fligh

re #4: There are many instances of people sacrificing themselves to save others, Chernobyl workers, figher pilots not ejecting but steering the plane away flightshow visitors etc. I expect these people to act this way routinely, give hazard pay to their entire profession to compensate for the risk, but likewise consider it my obligation to act likewise when the situation is clear (like in the Trolley Problem).