Usually, when I debate with pro PAP idiots, I never lose. Eventually one of 2 things happen in my experience. One is, as you said, they can't accept the truth because they are so brainwashed by the PAP, and they think you are wrong even when you present proof and logic that they cannot argue against. The second type of people believe you, and they can open their eyes after what you say. But they still cannot accept it because internally, they are coming to grips with the fact they have been wrong all these years, and they have been taken as suckers and the truth is so bad they just rather deny it and not accept it.