Traditional philosophy of science is relentlessly individualistic. It focuses on individual agents and on the conditions they should satisfy if their beliefs are to be properly supported. On the face of it, this is a curious limitation, for it is evident that contemporary science (and most science of the past) is a social activity. Scientists rely on each other for results, samples, techniques, and many other things. Their interactions are often cooperative, sometimes competitive. Moreover, in the societies in which most scientific research is carried out, the coordinated work of science is embedded in a web of social relations that links laboratories to government agencies, to educational institutions, and to groups of citizens. Can philosophy of science simply ignore this social setting?

Many philosophers believe that it can. It is worth recalling, however, that one of the principal influences on the development of modern science, Francis Bacon, was explicitly concerned with science as a social endeavour and that the founders of the Royal Society attempted to create an institution that would follow Bacon’s direction. Furthermore, as the discussion of the Copernican revolution above seems to show, the notion of social (or collective) rationality is philosophically important. As of 1543, the choice between Copernicanism and the traditional Earth-centred astronomy was unclear; the discussion evolved because some scientists were willing to commit themselves to exploring each of the two views. That was a good thing—but the good was a feature of the community and not of the individuals. Had one of the rival positions languished and all of the community members dedicated themselves to a single point of view, it would have been hard to accuse any single individual of a failure of rationality. It would not, however, have been a rational community.

This is an elementary example of a social feature of science that calls for a broader approach to rationality than what is standard in philosophical discussions. One way of understanding why some methods or principles deserve the label “rational” is to suggest that the ultimate standard for appraising them is in terms of their capacity to yield true beliefs. By the same token, one could suppose that institutions or methods of organizing inquiry count as rational if they are likely to enhance the chances of a future state in which members of the community believe the truth. (There are lurking complications here, which will emerge shortly, but they can be ignored for the moment.) It is not hard to think of ways of promoting diversity in a scientific community. Perhaps the educational system could encourage some people to take large risks and others to pursue relatively safe strategies. Perhaps the system of rewards for scientific achievement could be set up in such a way that individuals would gravitate to lines of research that looked neglected. Standard techniques of mathematical modeling reveal that institutional structures like these produce collectively rational outcomes in situations that seem to recur in the history of the sciences. One thus discovers that factors one might have thought of as antithetical to the rational pursuit of truth—individual biases or interest in social rewards—actually play a positive role in the collective venture.

Detailed sociological investigation is required to discover the ways in which scientists interact with each other and with parts of the broader society; detailed psychological investigations are needed to understand the ways in which they make choices. A satisfactory philosophical account of the sciences should be just as interested in whether the sociopsychological matrix is conducive to the attainment of truth by the community as it is in whether particular lines or styles of reasoning lead individuals to correct beliefs. At present, however, the sociology and psychology of science are in their infancy, and philosophy has little by way of data on which to build. It is already possible, however, to envisage a future philosophical account that avoids the limitations of the individualistic perspective now current.

Such an account might find that the social structures inherited from the early-modern period are quite satisfactory as a means of pursuing the aims of the sciences (although that would be surprising). Some contemporary philosophers believe that good reasons for thinking this will not be so are already apparent. Pointing to the exclusion, or marginalization, of some groups of people, they suggest that the current collective practice of science is biased toward the realization of a partial set of values. The most vigorous articulation of this perspective is offered in recent feminist philosophy of science.

Feminist themes

There are various ways of pursuing feminist themes in connection with the sciences. An important project, often dismissed as too limited, is to document the ways in which women have been excluded from participation in research projects. More philosophically ambitious is the attempt to show how women’s exclusion led to a bias in the conclusions that scientists accept. Here there is a classic and compelling example: during the 1950s and ’60s, (male) primatologists arrived at hypotheses about territoriality and aggression in the troops of primates they studied; as an increasing number of women entered the field in the 1970s, aspects of primate social life that had been invisible came to be noted, and the old hypotheses were forced to undergo radical revision. The specific moral of this case is that pooling the observations of both men and women may enlarge the range of evidence available to the scientific community; the more general point is that a diversity of social backgrounds and social roles can sometimes provide the most inclusive body of data.

Feminists sometimes wanted to argue for a bolder thesis. Appealing to the general thesis of the underdetermination of theories by evidence, they claimed that choices between equally good rivals are made by introducing considerations of value that reflect the masculine bias of the scientific community. Yet this style of argument works no better in this context than it did in the blanket sociological invocation of underdetermination considered in the last section. Where feminists can make a detailed case for the existence of equivalent rivals, it is important to probe their decision making to see whether an arbitrary choice is being grounded in a problematic way. There is no general reason for believing that evidential considerations always fall short, creating a vacuum that can be filled only by the irruption of masculine values.

The feminist argument does, however, point toward a deeper issue. Once it is understood that science is a social enterprise, it may be supposed that the institutions that guide the development of the sciences absorb major features of the background society, including the privileged position of men, and that this affects the goals set for the sciences and the values placed on certain types of scientific achievements. This form of the feminist critique is extremely important in bringing into the open issues that were skirted in previous discussions and that have been neglected in traditional philosophy of science. They can best be approached by returning to the unfinished question of the nature of scientific progress.