Is the pendulum an evil thing? If you suddenly don't want him, will something bad happen? ?

This thing actually has a little scientific basis. Unlike other things, you can use it to predict small things, but remember not to rely too much on it. So, I think it's not too weird. As for the second question, I don't know much about it. After all, I'm just sprouting something new. But I don't think we should give it up, so ...