Research from neuroscience confirms this. When people are riled up about something and you show them evidence that conflicts with what they believe, what does an MRI scan show? The areas of their brain associated with logic literally shut down. The regions associated with aggression light up. As far as their brain is concerned, it’s not a rational discussion—it’s war. The brain can’t process what you’re saying; it’s just trying to win. Your head works the same way unless you make an effort to control it. I’m sure some die-hard arguers are disagreeing.