Do practitioners really have magic?

Witchcraft is a strange idea of ancient people about phenomena and things they don't understand. The practice of seeking Tao is a taboo, and most people who pursue mana are possessed, which are mentioned in novels and movies. Because the real practice is to solve the mystery of mana, and the purpose of practice is the same as the purpose of scientific research, both to solve problems, not to have secrets for individuals. In fact, mana is worthless after all.