Some people can be as stubborn as a mule.
No matter how you reason with them, they refuse to listen. Once they make up their mind, they don't want to be confused with the facts. When such a person is appointed to a leadership position in the church, trouble is soon to follow. A leader must be able to discuss conflicting ideas and come to wise decisions. That is why the apostle Paul listed several characteristics of a qualified leader that reflect the ability to think objectively.