Experimental results often contradict what is described in textbooks and what is generally accepted. Such results are often not published. If they contradict the established theory, they are considered to be some mistake or a failure of the experiment. Only those that match the established theory are selectively published, and the result is to support the established theory. If the established theory is wrong, it will promote the spread of the mistake. We considered this by taking the flow velocity distribution of a bending river as an example.