Imitation can be divided into two types&colon; imitative learning and automatic imitation. All of these are examples of imitative counterpoint. Peking opera should be suggestive, not imitative. Yawning may be an offshoot of the same imitative impulse. This type of play includes two elements&colon; imitative and imaginative. According to Frazer, the fire rituals are a kind of imitative or sympathetic magic. Margaret Fuller judged Longfellow "artificial and imitative" and lacking force. Herman (2002) suggested that bottlenose dolphins produce goal-emulated behaviors rather than imitative ones. In broadest terms, flies are categorised as either imitative or attractive. Other reforms were of a more imitative nature. Plato's attacks on poetry as imitative, secondary, and false were formative as well. Doug Brod of "Entertainment Weekly" called it "utterly soulless and imitative". Also, boys showed more imitative aggression than girls toward the Bobo doll. Some "arguments" against Salvia have been of a preventative or imitative nature. Indeed, there is limited understanding of the degree to which monkeys show imitative behaviour.