text: When asking more than one person, their minds will not be thinking or the more selfish options since the choices will not benefit them in anyway. Since it will not be benefiting them their thoughts won't be influenced by the selfish options that if they were in that position they would choose. So for them to have selfless thoughts your choices should not benefit them in anyway. So once you ask the right person their minds will not tend to think on a selfish level and will be trying to makes the better choice for the greater good. Instead of when you would've been making the choice, your mind would tell itself this benefits me more so in the end that would most likely be your final decision.