1. If an interviewer asks you a question, respond thoughtfully with, "that's a great question." Then summarize what the topic is about, concluding with "at the end of the day, it remains to be seen what the impact will be." It helps to squint your eyes a little bit, at the end - as if your comment was so perceptive it hurt.
2. If the interviewer makes a point - and it's one that's full of theory and background that you only can begin to vaguely understand, respond with a sharp, approving, "Nail on the head!" The interviewer will be pleased that you agree with him or her, and will then instantly tune out, perhaps thinking about the snack to be had in the green room once the hour of programming ends. The gingerbread muffin, perhaps. What do you say after "Nail on the head?" See number three.