A man knows everything. Wake him up at night and ask what is the hydrogen bomb or why the government of Ariel Sharon will carry out a tough policy in the East, and he will give you a detailed answer. He would have citations, figures and the data of sociological surveys.
But when the relationship between men and women is in question, a man gives up. He gets lost and looks back helplessly. He does not want to argue on the psychology of a relationship, he wants to go to a garage. He does not know the answers to the majority of questions that are asked by women, he cannot give advice, and his precise consciousness fails to provide an appropriate relationship advice in a problematic situation. To rescue himself from such memory overloads, a man has found, in his opinion, a logical explanation to everything, to any situations in the relationship that can be called "love".
Now each question has got a standard answer: "It is because we are animals". And not really we (all men), but usually only he (the one). Now he can explain everything:
a) his infidelity (we are all polygamous);
b) his lies ("Yes, I have embellished something; it is because a peacock can drop a feather");
c) his laziness ("It is known that only lionesses hunt");
d) his irresponsibility ("A bear does not care about his children").