I don't agree with either of these , but I thought them interesting.
No man is so fat nor train so small that a human body is going to derail the train, that is really a poorly concieved example , but in the concept are situations that happen every day, especially to persons in authority.
Firemen have to choose which rooms to search knowing that they won't have time to search all .
Police have to deal with hostage takers.
Military leaders have to choose units to tackle dangerous assignments.
Even parents have to decide what resorces to expend on each childs education when there isn't enough to go around.
It is not rare at all for someone to have to decide something important where all choices cost something ,but dithering can cost all.
I hate this situation, I am glad it is rare in my life.
If a person had little empathy would this be an advantage in coolly chooseing the best ?