We now are having a national conversation about gun control and mental health. People are rightly asking how to change the laws to keep assault weapons out of the hands of non-law enforcement personnel. Others are wondering what might be done to intervene to help those with mental problems. Some ask how schools might be made more secure to protect them from deranged intruders. They are trying to draw lessons from what happened. They are not politicizing the tragedy. They are trying to learn from it.