Messing seems to say that it is impossible for scientists to be objective. I do not fully agree with Messing when she says that it is impossible for scientists to be objective for that reason. Scientists should be objective when setting up their experiments. They have total control over the set-up, but once the experiment is set up, they have no control over what direction the experiment is going to go in. That is what experiments are for.
Scientists conduct experiments until they come to the response they want.
Scientists also have to be objective once the experiments are completed because they have to decide what information to use from their studies. If what Messing says is true, which I do not believe it is, I do think that it will decrease the credibility of the information. THey continue to research until there findings seem conclusive. If they find that their initial assumption is incorrect, they may obtain another and continue from there. They are being objective, but without some objectivity a scientist would not not have anything to base their experiment around becuase they must have some idea of where their experiment is going to lead.