People are not that complex - once you know how they function at their most basic levels of motivation, they are like reading a book! The Science of Reading People isn't a book that tells you about crossed aims, eye contact, and eyerolls. This is about deep behavioural psychology, how to recognise signs of what people are thinking and feeling, and how it affects all our actions and behaviours. Is it possible to understand someone from observing them? Yes, if you know what you are looking