Homicidal Archers aren't allowed to participate. They determine this by the questionnaire they complete. Question #10 asks; If given the opportunity, How many people could you arrow in the heart within 2 minutes with 25 arrows? LOL, jk., but the guy who did this study (if you want to call it that), apparently is a sadist and wanting to implant such an idea into someone's mind. Seriously, who in their right mind would even think this?