[chalst]

To be clear, the problem kordlessagain is referring to is that if you make the effort to make explicit what the X and Y are, the response will rarely include the slightest explicit acknowledgement of any incoherence.

Generally, if a fallacy is found in one's arguments and one values intellectual honesty, the best response is to apologise for the error first and only then attempt to restart the argument. If you don't do this, but try to act as if there was no error, you do avoid loss of face in the eyes of the unthinking that comes from admitting error, but you lose the respect of readers who understood the error and saw the evasion.

It is a sad fact that today most people have little awareness of this risk of losing respect in heated arguments, let alone place high importance to it.