From time to time when I watch a movie or a tv serie I think “why aren’t they telling you the whole truth?”

It would simplify everything, but that isn’t happening in the movie and neither it happens in real life.
Sometimes we keep our thoughts for ourselves making impossible for the other people to understand us.
How could they? We can’t rely only on body language, in fact it’s useless to expect body language to have that much importance.

Yes, understanding body language can help, but we need to be more transparent, to speak our thoughts more frequently and more clearly and to always think of who we are talking to.
To be human, that’s it.