All great until you come across someone with a permanent poker face. During my last interview, the interviewer was frowning the whole time.
Keeping your mouth shut, saying no, and not lying or BSing are three of the most useful skills you can develop. Many people feel pressure to respond quickly, especially in a performance situation like an interview, just as the writer of this article was highly tuned to what his interviewer wanted to hear. Controlling the tempo and direction of your own responses is a way to gain the strategic initiative without being disagreeable.
Just pausing and not answering quickly when given an offer is a power move. I know it consciously but I still find it hard/impossible to do in real life.
(It's Monday. Smile a little.)