Many sociologists – not just those who consider their activities to be scientific – argue that sociological research needs to be objective; that their bias and values should never impact on their research design, interpretation or analysis. However, interpretivist sociologists are interested in the subjective views and interpretations of their subjects, believing that it is impossible to objectively establish social facts. Most would still urge sociologists to be objective in their research, although postmodernists argue that all research is inevitably subjective.