Who is lying about the maternal death in Yulin?

1 How can Lou teach others lie detection like this? ! Different people have different expressions and habits, and there is no fixed sign of lies. How much misunderstanding will it cause to teach others like this? Actually, the polygraph is like this. First of all, we can see a person's psychological state and feelings from his facial expressions and actions, but it is not enough to know these. Secondly, we should analyze the context of the whole incident and make a comparison. Whether the characteristics are consistent with what he said and whether they conform to the law of the development of facts "can roughly infer whether this person is lying, but in fact, even knowing whether he is lying is useless, because it is easy to see that he is not lying, and" why lie "is the key to the problem. Many people lie, the purpose may not be malicious, but there are other difficulties. If you two friends quarrel, you don't agree on one thing. Maybe one person is lying, or someone has misunderstood this matter, so that no one is lying, but they have different views on the same thing. So if LZ can provide a detailed context, I can analyze it again. If LZ doesn't think it is necessary, I can only tell you one way-"sincere communication".