Arguing and Convincing

 "You wrote a series on logical fallacies some time back, didn't you?""Hmmm...", I said, apprehensively. This sort of start to a conversation almost always boded ill for me. Now, what fault was this guy going to find with that series?"You do know that most logical fallacies are used, mostly knowingly, in arguments between people, don't you?""Of course I do. So?""Tell me, what is the difference