From the people I can observe more closely, it’s easier to read body language in person and make guesses based on those results. Naturally, my observations of people who I don’t really know are going to be off more often than not. As snapshots of human behavior aren’t always going to yield anything useful, people can play up all the behavior most would consider ‘proper’.
What I’m trying to suggest to you is that the “vibe” is from a minority of the people who are guilty of the crime.
From the people I can observe more closely, it’s easier to read body language in person and make guesses based on those results. Naturally, my observations of people who I don’t really know are going to be off more often than not. As snapshots of human behavior aren’t always going to yield anything useful, people can play up all the behavior most would consider ‘proper’.