The average person generally exists point dense object phobia, that is, people will be dense object instinctive fear of psychology, such as seeing dense flies, dense bees and even dense crowd will appear back cold, body itching, shivering and other symptoms. In general point dense phobia actually does not need treatment, because it is a common human reaction.

Possibly point-like dense object phobia did not attack in the ancients there, or the frequency is relatively low (after all, like what tadpole eggs lotus milk in ancient times is not very easy to see ......). But the ancients must have had them, because it's a normal human manifestation (mild, severe would be pathological)