Advantages and disadvantages of ancient information transmission?

The advantages and disadvantages of information transmission in ancient times are as follows:

1. Word of mouth, manual transportation

Advantages: everything is rendered more vivid (epic, literature, stories); letters are relatively well preserved (postal books).

Disadvantages: lack of impartiality and truthfulness, often adding personal opinions, which can lead to three people becoming a tiger, hearing no evidence (rumors, rumors); expensive, manual transportation errors (postal books).

2, the geese pass the book, the fish pass the ruler

Pros: romantic (mostly recorded in poetry, not used in real life, so the authenticity of the authenticity to be verified, it is difficult to conclude)

Disadvantages: unreliable, the geese are the ancient carrier pigeons, convenient, the fish on the difficult.

3, knotted rope to keep track of things, say the word painting characters

Pros: at that time has been considered advanced. Weaknesses: now is considered backward.

4, mail

Zhang Ji has "Autumn Thoughts" poem is the most wonderful, "the repeated empty rush to say can not be said, pedestrians Linfa and Kaifeng."

Here "pedestrian" is the letter carrier, and "and" is not the meaning of arrival, "Kaifeng" is not the name of the place, is to open the sealed seal de meaning.

The ancients used the following methods to send messages: pigeons, beacons, fast horses, signals, sign language, letters, flags and so on.

Mainly there are flying birds (pigeons, geese, flying geese), stagecoach (fast horse), beacons, wolf smoke, semaphore, lights (three dozen Zhu Jiajiazhuang, Kongming lanterns) and so on.