Scientists bring more than just a toolbox of techniques to their work.
Scientist must also make complex decisions about the interpretation of data, about which problems to pursue, and about when to conclude an experiment. They have to decide the best ways to work with others and exchange information. Much of the knowledge and skill needed to make good decisions in science is learned through personal experience and interactions with other scientists. But some of this ability is hard to teach or even describe. When judgment is recognized as a scientific tool, it is easier to see how science can be influenced by values.