This part of the post gives the answer away. The proposed reason for the common difficulty in solving this riddle is implicit bias. Essentially, through social conditioning, our minds have created a certain default image of what constitutes a doctor. This particular riddle exposes that bias. The Kirwan Institute at Ohio State University defines implicit bias as “the attitudes or stereotypes that affect our understanding, actions, and decisions in an unconscious manner. These biases, which encompass both favorable and unfavorable assessments, are activated involuntarily and without an individual’s awareness or intentional control.” While the presence of biases is quite normal, these unconscious calculations can cause us to make faulty evaluations. Since these biases exist outside of our conscious awareness, they’re often challenging to address. Left unchecked, however, they can perpetuate certain toxic, stereotypical attitudes about the world around us. You are here, so the riddle did