More like a philosophical question.
closed as off-topic by forest, Steffen Ullrich, NULLZ, AndrolGenhald, schroeder♦ Apr 17 at 17:16
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question does not appear to be about Information security within the scope defined in the help center." – forest, Steffen Ullrich, NULLZ, AndrolGenhald, schroeder
If you know you are being cheated, you are still being cheated. For social engineering, this may mean that you are warned, and that the attempt will probably fail. But social engineering in itself does not guarantee a positive outcome: a failed attempt is still social engineering.
Your question can be understood in different ways.
If the question is "Am I still social engineering someone if he knows he's being social engineered?", then I guess @Ljm Dullaart answer is what you're looking for.
Otherwise, if your question is "Could the fact that I know that I'm being social engineered be a way to social engineer the other person?" then absolutely yes: knowing that someone is lying to you is an advantage that, generally speaking, could let you gain additional information about the person you're talking with or the facts you want to know about.