For example, we often encounter the situation of "speaking of the devil". Two people were talking about other things at home, and suddenly the conversation shifted to someone, and then someone immediately pushed the door or knocked at the door. Why is this? It is when this person will come to your home that he will think of you in his heart and you will feel it. This kind of induction between creatures is beyond electromagnetic phenomena's explanation, let alone the principle of sound waves and light waves. Many principles of biology and even matter are unknown to human beings, and human knowledge is still very small. Can't say that what can't be explained is superstition. If you don't say so, it's not a scientific attitude.