with. For example, he once rescued an infant and left the child with a doctor (which would require an understanding of the function of a doctor and the ability to navigate to a specific address). He is shown to understand concepts such as how to ring a doorbell, how to put an arm in a sling, and even how to flip an auto-destruct switch. The change in the Man-Thing's intellect can partly be explained by fact that its brain, sensory organs, and central nervous system are now organized in a completely different fashion than a human's; for instance, the Man-Thing's auditory receptors are in his forehead. Regardless of what level of humanity the creature still possesses, it can discern when a person's motivations are evil, which causes it pain and motivates it to lash out. The Man-Thing possesses a variety of superhuman powers that are derived from the combined interaction of the scientific formula created by Ted Sallis and the mystical energies of the Nexus of All Realities. It is able to sense human emotions, and is enraged by fear and automatically secretes a powerful corrosive; anyone feeling fear and clutched by the Man-Thing is prone to be burned (either chemically or mystically), hence the series' tagline: "Whatever knows fear burns at the Man-Thing's touch!" Though fear is understandably most people's response to the creature, both for his monstrous appearance and the physical danger of his touch, typically only villains end up meeting an immolating death at its hands. Many survive being burned, notably Ellen Brandt, Nightcrawler (whom he does not even scar), and Mongu, whose hand he permanently attaches to his axe, either due to intervention or dissipation. Unusual psychic and mystical forces react in what passes as the "brain" cells located throughout his body. These unique forces render the Man-Thing extremely sensitive to emotions. Emotions that are mild and generally considered positive arouse curiosity and the Man-Thing will sometimes observe from a distance. However, emotions that are often viewed as negative, such as violent emotions like anger, hatred, and fear, cause the Man-Thing great discomfort and might provoke him to attack. Once provoked into violent actions, his body secretes highly concentrated acid that can burn human beings to ashes within a matter of seconds. Even individuals that have high levels of superhuman durability have proven unable to withstand this potent acid. While the Man-Thing is devoid of violent