This Ted Talk is about neuroscientist Jim Fallon who talks about brain scans and genetic analysis that may uncover the rotten wiring in the nature of murderers. It helps understand the underlining reasons why Dick and Perry are the way they were. He looked at the brains of several different known murders to see if there is any similarities between them. He noticed that most of them had damage in their orbital cortex and anterior temporal cortex. Another reason could be that they produce too much serotonin at a early age. Too much serotonin at a early age can cause a body to be come immune to it. The mind set to killiing someone can be passed down your family tree too. All theses reasons give us a understanding of why Dick and Perry were killers. They could have actual brain damage, or just runs in the family.