The characteristics, universality, dependence and timeliness of information enjoyment.

Universality: Information is everywhere. There are information everywhere around us, such as class bells, traffic lights, things we see and hear every day.

Dependence: the bonfire lit by soldiers is not the information itself, but the meaning it contains is that there is an invasion by foreign enemies, which is the information, and the bonfire is only the carrier for expressing and transmitting information.

* * * Enjoy: Bernard Shaw has a vivid metaphor for * * * enjoying information:

You have apples, and I have apples. If you exchange, we still have an apple. If you have an idea, I have an idea. If we communicate with each other, we all have two ideas, or even more.

This example shows that information will not be reduced by the enjoyment of * * * substances, but can be derived from the enjoyment of * * *.

Timeliness: weather forecast, for example, is only useful for a few hours, and then it becomes invalid.

For example, Qin Guojun's books or materials unearthed in Xianyang two thousand years ago now seem to be a piece of waste paper. Are there any ancient examples?

For example, tomorrow's yellow flowers are metaphors of outdated or meaningless things. Later, it is a metaphor for a report that loses news value or something that loses its timely effect.