How did Henry Fonda act as the mediator of the dispute between himself and other jurors?

Henry Fonda was Juror #8. He is the only juror who votes “not guilty” at the first vote. He is discontent with the way the trial was handled and wants them to discuss the evidence in greater detail. Met with much opposition, he continues to advocate for the boy. We learn that he is an architect, by trade. He often mediates through Juror #3's rash judgments and bigotry. Check out the character list below: