Where there are people, there will be ideas, and where there are ideas, there will be inventions. Some inventions benefit society, while others harm others and benefit themselves. Let's take a look at the role of the three social classes in invention.

The grassroots society invented anytime and anywhere, but never thought of using invention to change their own destiny.

To put it bluntly: "Most of the world's inventions are invented by grassroots society." As soon as this sentence is uttered, many people will refute it, and many people will say, "Those inventions were all invented by inventors!" "I've never been ...... to this kind of nonsense

The role of the three social classes in invention. I am hitting it in my hand, please wait a moment,

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