I've been digging social engineering for a very long time, and guess what? IT'S SO POWERFUL!!!!
As you know, to confuse a person, it is enough to pour it on milk and set it on fire :-)) However, you can use more effective methods.
The easiest way to knock down a person and confuse is to act when he does not expect it.
Especially such a dirty trick is not expected at the moment when he himself is preparing to say something. This point is easy to catch, if you follow the breath of the interlocutor. Before expressing one's thought, one concentrates, drawing air into the chest. It is during this pause that you should be-whelmed with your cue. The words with which you wedge can be anything (praise, expression of disagreement, loud hiccup), but the best approach is an inappropriate question ("By the way, do you know how to whistle with your armpit?"). If you try to interrupt the speaker in the middle of the sentence, he will finish his thought by inertia and only then he will pay attention to you.
Make a person worry.
To do this, use an inadequate response. For example, an inexperienced speaker will be embarrassed and confused if he notices that instead of nods that confirm the correctness of his words, the listening protester shakes his head from side to side (you should pre-work this movement by observing the game of table tennis). Even more confused speaker is the lack of any reaction in the listener at all. Sometimes it's enough for three minutes in silence, with a stony face, without blinking, and looking somewhere far away to listen to a man, so that he gets lost, fell silent, bowed his head out of the office and shot himself in the corridor.
Even a well-trained and savvy person in the subject can be confused by asking him the "right" questions.
The classic method is to ask more than three questions at a time and demand a full answer ("How much does this installation cost and will it be cost-effective? And when exactly will it pay off? And, most importantly, can it be painted orange? Or is it better in silver?" And what color Do you like it more? "). It is important to pause after your first question, and when the interlocutor prepares to respond to it, bring down the rest. You can also try to knock it off by asking a question that will affect the far-fetched problem. Spending intellectual efforts to deny the obvious nonsense ("What will you do if at that moment a meteorite falls on our office?"), A person can lose the thread of reasoning.
If at this point the interlocutor does not lose his head and asks you the opposite contrived question, while he waits for the reaction, pour it on milk and set it on fire, the more you confuse it.