“Here’s the thing about people. We’re not born fully made. Colts and calves are fully made while in their mothers’ bellies, so they can already run by the time they come out. But humans are born and then made. It usually takes three years. Lately, there is even a theory that says it takes eighteen years. So, to put it in simple terms, God makes seventy percent of the person, and the parents fill in the remaining thirty percent—the rest has to be completed. But that thirty percent, it leads the other seventy percent. If we compare it to computers, that thirty percent is the operating system. But when the brains of people who were abused as children are scanned, five to ten percent of the brain is damaged. It’s as if, from the time they were children, they’ve been driving cars with damaged engines. They cannot control their impulses with that kind of damage. But it doesn’t affect the intelligent parts, their intellect. That’s why serial killers can have high IQs and be very logical. Ultimately, they are mentally ill people who have not yet been proven to be mentally ill.”“But not being able to control their impulses doesn’t mean they always hurt other people, right?” Aunt Monica asked.“Right. In these cases, the most typical symptom is insensitivity to others’ pain. In other words, their ability to empathize is noticeably diminished.”