Science . The human brain is not fully developed until the age of twenty-five. Fully developed adults process the world relying heavily on the prefrontal cortex, the part of the brain responsible for good judgement and understanding long-term decisions. Kids under the age of twenty-five rely heavily on the amygdala, the part of the brain responsible for processing emotion. The amygdala develops first. This is why my seven and eleven-year-old sons have more emotional outbursts than I do. They just feel hurt and angry in a maelstrom of childhood emotion. Logic has not kicked in yet. It won’t fully until they are twenty-five. Still, a nineteen-year-old boy, who I wish the media would stop calling a man, legally bought an AR-15 semi-automatic assault rifle. My amygdala says, that thing would be awesome to square up some grudges I feel against the legislators who have wronged me and this country by weaponizing our citizenry, and profiting off of the carnage. My prefron...