Science is the search for truth. In the process of exploring the truth, people's understanding of objective laws goes through a painstaking and tortuous process. There is often such a situation: due to different angles of research, differences in mastering data, and different methods of understanding, there will be a situation of winding mountains and steep peaks on the side, and different patterns in the past from far and near. So as to cause academic debate. 
successful scientists regard opposition as a great help to themselves and criticism to themselves as a precious friendship. As Li Siguang said, nothing motivates me more than frank criticism of my thesis. Goethe also said: what we agree with makes us feel at ease. It is what we oppose that makes our ideas fruitful.  This is all because those in favor may not be correct and those against may not be wrong. to say the least, even erroneous objections are very beneficial to one's own scientific research.
People's understanding of objective laws has to go through a painstaking and tortuous process