Earlier quoted context omitted.
A lot of normal people may routinely act charming and game social interactions, but they generally aren't being "manipulative" in the process. "Manipulation" is really just a polite word for routinely lying and BS'ing people on the off-chance that they are going to be fooled and/or not want to call you out on it. If you're reasonably socially skilled, you can usually see it coming a mile away and react accordingly, b…
So for the same set of actions, it's fine if you're unaware of the underlying mechanisms, and manipulation if you are aware? If you dig through the weeds of it you can argue just about everything we do socially is manipulation. We are social because we're social animals and will die without help from other humans (well, particularly thousands of years ago). At the end of the day, we are nice to people to get things f…
If I get sad or angry when a friend tells me a story, this feeling is a expression of my inner state, not a strategic choice I make to get to a certain place. And this inner state usually translates into how people act later. So if I am enraged how my friend was treated I may be inclined to take steps that help them get even, for example.
Manipulation, however, is when I (feeling nothing), pretend to feel a thing with the goal of getting a certain response.
The border between the two is of course not totally clear-cut and people can manipulate themselves into truly feeling things without following through with any actions etc. So a complex topic, but the reason why the manipulation works in the first place is because the feelings people express towards us are more often than not an expression of how they will act towards us as well. If a guy on the street screams at you, your #1 interpretation won't be that he does it to manipulate you, but that that person is experiencing an actual feeling that may convert to physical action pretty soon.