not all those who wander are lost
It seems that reasonable decisions and adaptive social behavior spring from the combination of logic with emotion, rather than from logic alone. [...] In each case, the patient's IQ, memory, and speech capacities remained intact, but she or he could no longer experience feelings and could not make decisions that reflected the totality of the situations with which she or he had to cope (Graber, 2001).
В принципе, логично, но всё равно очень интересно, если задуматься.