t, it presents a summary of the state of the art and an outline of the historical emergence of the participatory question. The argument distinguishes four periods since the late nineteenth century, each with a specific relationship between expert and nonexpert knowledge ranging from a hybrid, to a politicized, to an autonomous, to a participatory relationship. Second, the introduction summarizes the contributions to this issue. Their common concern is to take the debate one step further by critically reflecting the problems and limitations of participatory practices. The contributions point out the need for contextualizing the participatory question within the wider social, economic, and political circumstances in which participatory science and technology is set.

27:T45a,

Discursive deference in the governance of science and technology is rebalancing from expert analysis toward participatory deliberation. Linear, scientistic conceptions of innovation are giving ground to more plural, socially situated understandings. Yet, growing recognition of social agency in technology choice is countered by persistently deterministic notions of technological progress. This article addresses this increasingly stark disjuncture. Distinguishing between “appraisal” and “commitment” in technology choice, it highlights contrasting implications of normative, instrumental, and substantive imperatives in appraisal. Focusing on the role of power, it identifies key commonalities transcending the analysis/participation dichotomy. Each is equally susceptible to instrumental framing for variously weak and strong forms of justification. To address the disjuncture, it is concluded that greater appreciation is required—in both analytic and participatory appraisal—to facilitating the opening up (rather than the closing down) of governance commitments on science and technology.

28:T8a8,