This kind of decision making has less to do with the frontal lobe than with the pineal gland at the base of the brain.
The pineal (glandular) body in the human brain, which is subtly related to certain conditions of obesity and certain sexual phenomena, is generally considered to be the vestige .
Descartes believed the pineal gland was the seat of the soul, and doctors later thought it was man's third or inner eye.