According to Buñuel, they adhered to a simple rule: “Do not dwell on what required purely rational, psychological or cultural explanations. Open the way to the irrational. It was accepted only that which struck us, regardless of the meaning ... We did not have a single argument. A week of impeccable understanding. One, say, said: "A man drags double bass." “No,” the other objected. And the objection was immediately accepted as completely justified. But when the proposal of one liked the other, it seemed to us magnificent, indisputable and immediately introduced into the script.”