Kindle Notes & Highlights
The parallel in reading faces is that if you want to know what emotion someone is feeling, you must watch the temporary changes in the face, because it is these rapid facial signals which give information about emotions.
The face provides three types of signals: static (such as skin color), slow (such as permanent wrinkles), and rapid (such as raising the eyebrows).
do you tell from the face how someone feels, and how can you tell if his facial expression is genuine or phony?