For example, children who are unfamiliar with the world, old people who are out of touch with society, and open-minded fools.
2. People who are willing to be cheated by each other
For example, parents treat their children, lovers in love, and people brainwashed by religion/pyramid schemes.
Follow the crowd
When you step into an unfamiliar field, follow the trend. For example, the stock market, bitcoin, futures novice.
4. Greedy people
If a greedy person is caught by psychological defects, it is almost the same as a brainwashed person.