It struck me that the more biased one is in their own favor, so long as it doesn't provoke or offend those around them, the better off they are, and the more they can benefit. This argument can be further extended to other people, however. The more biased one can make other people in one's own favor, the further one can benefit themselves.
That explains why propaganda and the likes are so commonly used. However, it is not all bad news.
For example, the Chinese philosopher Confucius, seeing the political decadence and religious questioning of his time, preached an ethical interpretation of the dominant religion in that time and place (Zhou) focusing on "humaneness and rightness, decency and altruism". Therefore, it is partially about the motives, be they for moral and ethical or for wealth and power.
All in all, these realizations explain a lot about how things work in the world. Or, as my boss told me in response to these ideas, "Welcome to corporate America". He has a good point.
Come to think of it, weren't schools in America designed to condition children for the workplace? In American culture (and probably a few other industrialized nations), why is it common to hear things in school like "What do you think your boss would tell you if you came in late?" Or "In the real world, you would get fired for that." I think, when looking at it that way, it becomes evident exactly who seeks to gain by shaping our biases and preconditions. Spoiler: It isn't us.
What do you think? What are your views on the world we live in? What do you think are the upsides or downsides to these aspects of reality?