How good is good?

I had an interview recently, and half way through I could tell that I was losing her attention. Has this ever happened to you? Ever get "that feeling" as you are talking with someone? It's as if they have two different brains. One brain is generating and delivering words, facial expressions and body motions. The other is collecting information and forming an emotional association with me as a person. Now, the kind of information they are collecting at the point is at the heart of our discussion, and I've never completely understood it. What ever information this is, I can usually tell when they think it is good, and the few times when they think it is not so good. Is it my gray hair? Is it the wrinkles under my eyes? Is it the fact that my tie and white shirt are too perfect? Is it the degrees of separation between the whiteness of my shirt and the yellow in my teeth? What ever it is, I can see an emotional cloud forming in their mind as we talk. The words and ideas we exchange seem irrelevant. At the end of the meeting, they smile, and I smile, and we shake hands and make statements about moving forward. Often we both know this exchange is a farce. Most people are kind and instead of being honest choose to set false expectations. It's all such a mystery!