The logical AND operator combines binary inputs, each valued 0 (no) or 1 (yes). It outputs 1 only when every input is 1; otherwise it outputs 0. In a larger system, an AND machine can combine decisions produced by separate detectors or classifiers. section 7.2.1
A cat reacting to hardness and sharpness
Suppose one detector reports whether an object is hard and another reports whether it is sharp. A less timid cat runs away only when both detectors output 1. Hardness alone or sharpness alone does not trigger the response. section 7.2.1






