Just to clarify... The following quotes appear in Muna's response:
"philosophers would probably waste time trying to be open-minded"
and
"A leader should be able to make the best decision for everyone that they lead."
Is it possible for someone to make the best decision for everyone, without as much open-mindedness as possible? (Where open mindedness means taking into consideration as many perspectives, benefits and possible consequences as possible?)

Further clarification, Maymoon:

"A leader needs to be a person who is firm with decisions they make for the people under them whether it goes against their beliefs, emotions or desires."
What should leaders base their decisions on?

"Also a good leader needs to distinguish between what is right or wrong and what is good or bad but in philosophy their are no standards for right or wrong and good or bad. All options are subject to perception."
Does Aristotle believe there is no right or wrong?

[Just a quick note. Every philosopher through ancient greek or medieval times were clergy men who believed in the sacraments of their religion as the foundation for their philosophical writing. After the scientific revolution philosophy derived the two major moral theories (utilitarianism by J.S. Mill and deontology by I. Kant) that are used to this day as moral guidelines for our jurisprudential system and ethics taught in schools for example].