"Beneficial" and "unhelpful" are relative, not absolute. For example, arsenic, a traditional Chinese medicine, is useless or even harmful to normal people; But it's good for white blood cell patients. "Eating radish in winter and ginger in summer", the same radish and ginger in different seasons are "beneficial" and "unhelpful" to human body. The compatibility of traditional Chinese medicine and the introduction of drugs profoundly reflect the wonder of "beneficial" and "useless".

Since there is such a mystery between "beneficial" and "useless", you must not easily assert what is "beneficial" and what is "useless" when writing. Some parents don't let their children read idle books, saying it's "useless". Really? I remember that Mr. Lu Xun advocated young people to read casual books, that is, books that can be "read casually" and can help us "collect and learn extensively" Presumably this is Mr. Lu Xun's own reading experience, so it can be seen that reading so-called "useless" idle books can also read writers. Some parents don't let their children play video games, saying it's "useless". Really? The developers of the board game "Kill the Three Kingdoms", which is popular all over the country, started playing video games, and later went from "player" to "expert". The assets of this "post-80 s" boy have reached tens of millions. I think at the beginning, if he was really fooled by "futility", would he still succeed in starting a business today?

Therefore, you should write dialectically when thinking, so that your article can be speculative.