I just want to be clear that I’m not saying that the details of the algorithms are irrelevant. In a way they can matter very much, and you know, in a certain circumstance, in a certain situated use, it might matter significantly what the algorithm does but we can’t say that a priori. So we need to both open up the algorithms, we need to understand them as much as possible, but we must not be seduced to believe that if we understand them therefore we know what they do.
The face is a constant flow of facial expressions. We react and emote to external stimuli all the time. And it is exactly this flow of expressions that is the observable window to our inner self. Our emotions, our intentions, attitudes, moods. Why is this important? Because we can use it in a very wide variety of applications.