On the contrary maan ko rani, body language is a huge way to know what is in a person's mind. You can never be an expert and depend 100% on a person's body language but you can surely get an idea about whats going on with the person. But I did not like the article because the writer is teaching you how to give someone a certain message and it could be used in the wrong way. For example, the writer tells you how to build rapport and get someone to like you. If a person wants to use it to their own benefit they can. I dont think I like the writer at all!