(Q) said:The decision of what to do or not do in split-second life and death scenarios will be based on whether one has the ability to overcome the 'doe-in-the-headlights' gaze and act. If not, then you'll watch as 20 men die. If so, most likely you'll flick the switch to save the group of 20.
Time is a major factor here, and most people do not have the ability to think through these scenarios and their repercussions when engaged.
If the group of 20 were old sterile men - pensioners and the group of 10 were young fit fertile men with families and young chilren would you still opt to kill the men who had families to raise and support and save the pensioners? Even though they were never in danger in the first place?
Opting for greater number all the time in favour of 'needs of many out weigh needs of the few' is flawed decision making.