Hypothesizing Las Vegas and Sutherland Springs Mass Shooters Suffer from Reward Deficiency Syndrome: "Born Bad".

The slaughters in Las Vegas and Sutherland Springs demand explanation, in the face of the ineffable. An understanding of the shooters' motives could restore our trust in our mutually cooperative existence. In this short communication we provide post-hoc rationale of both Stephen Paddock (Las Vegas mass shooting) and Devin Kelley (Southerland Springs mass shooting) and hypothesize that these shooters had genetically induced "Reward Deficiency Syndrome" (RDS) and a hypodopaminergia trait/state.