Those with damage to the lobes are often untroubled by the ethical dilemma of choosing to push one person in front of a runaway trolley in order to save five others.

Patients with damage to the frontal lobes often suffer from blunted emotions, and the frontal lobes are also home of problem solving and judgment. Therefore, individual with frontal lobe damage aren't as torn about making these types of ethical decisions.

The one that most represents the earths mantle would be the skin since the mantle is the upper part of the earths depths which is just like the skin of an apple.