In many fields, such as medicine, psychology, and neuroscience, there’s a serious problem with the difference between subjective and objective reality. Until this problem is solved, the two realities will never really mesh. At first the subject-object split seems easy enough. If you feel a pain in your foot and you find a rock in your shoe, the rock (objective fact) is the cause of the pain (subjective experience). Medicine, psychology, and neuroscience all accept this as the true model for all subjective states (love, happiness, depression, anxiety, etc.)—a physical cause in the objective world creates a subjective feeling.