They are not always correct, but for the most part, they can give you a feeling for how a person reacts to different situations. say you meet someone on a down, very bad day, you might be like “wow that person is a real piece of work” and try to stay away from them if you go on just first impressions. The next time you see them it could be a regular or good day and that person could become your bestie. Its happened to me.
You are welcome. Thank you for asking such a deep question.
I agree with you, Dawn! It happened to me too! Thanks for explaining this so well. Thanks for your comment!