Fluidity recognizes the highly flexible or permeableboundaries of OCs, where it is hard to figure out whois in the community and who is outside (Preece et al.2004) at any point in time, let alone over time. Theyare adaptive in that they change as the attention, actions,and interests of the collective of participants change overtime. Many individuals in an OC are at various stagesof exit and entry that change fluidly over time.

In knowledge work, several related factors sug-gest the need to reconceptualize coordination.

Under the stress of the situation, with too many peopledoing too many things at once, the socio-technical infrastructure that underliestheirwork practice wasbreaking down. Star and Ruhleder [25] explain that infrastructure becomes visible only at these points of breakdown. Volunteers directedtheir attention to their social configuration as the critical infrastructure here (the technical infrastructure remains take

In this section of the paper we broach two aspects of this articulation issue, onefocusing on the management of workflow, the other on the construction and manage-ment of what we term a ‘common information space’. The former concept has beenthe subject of discussion for some time, in the guise of such terms as office automa-tion and more recently, workflow automation. The latter concept has, in our view,been somewhat neglected, despite its critical importance for the accomplishmentof many distributed work activities

Resistance Realily is 'that which resists,' according to Latour's (1987) Pragmatist­inspired definition. The resistances thal designers and users encounter will change lhc ubiquitous networks of classifications and standards. Although convergence may appear at times to create an inescapable cycle of feedback and verification, the very multiplicity of people, things and processes involved mean lhat they are never locked in for all time.

Infrastructure and Method: Convergence These ubiquitous, textured dai;sifications and standards help frame our representation of the past and the sequencing of event� in the present. They (:an best be understood as doing the ever local, ever partial work of making it appear that science describes nature (and nature alone) and that politics is about social power (and social power alone).

Practical Politics �1 ·he fourch major theme is uncovering the practical politics of classifying awl standardizing. 'fhi<; is the de.sign end of the spectrum of investigat­ing categories and standards as technologies. There are two processes associated with these politics: arriving at categories and standards, and, along the way, deciding what will be visible or invisible within the system.

The Indeterminacy of the Past: Multiple Times, Multiple Voices The third methodological theme concerns ihe f1asl as indetc,rr,1inate. 10 We are constantly revising our knowledge of the past in light of new developments in the present.

Materiality and Texture The second methodological departure point is that. classifications and standards are material, as well as symbolic.

This categorical saturation furthermore forms a complex web. Al­though it is possible to pull out a single dassilication scheme or stan­dard for reference purposes, in reality none of them stand alone. So a subproperty of ubiquity is interdependence, ,md frequently, integration. A systems approach might see the proliferation of both standards and classilications as purely a matter of integration-almost like a gigantic web of interoperability. Yet the sheer density of these phenom­ena go beyond questions of interoperability. They are layered, tangled, textured; they interact lo form an ecology as well as a flat set of compatibilities.

Ubiquity The first major theme is the ubiquity of classifying and standardizing. Classification schemes and standards literally saturate our environ­ment.

A definition of infrastructure

This chapter offers four themes, methodological points of departure for the analysis of these complex relationships. Each theme operates as a gestalt switch-it comes in the form of an i11fras/:ruclural inversion (Bowker 1994). This inversion is a struggle against the tendency of infrastructure to disappear (except when breaking down). Tt means learning to look closely at technologies and arrangements that, by design and hy habit, tend to fade into the woodwork (sometimes literally!). Infrastructural inversion means recognizing the depths of interde­pendence of technical networks and standards, on the one hand, and the real work of politics and knowledge production8 on the other.

Infrastructures are never transparent for everyone, ancl lheir '\\•ork­abilit y as they scale up becomes increasingly complex. Through due methodological attention to the architecture and use of these syslems, we can achieve a deeper understanding of how it is that individuals and communities meet infrastructure. ·we know that this means, at Lhe leasl, an understanding of infraslructure that includes these points:

Information infrastrucLUre is a tricky thing to analyze_l; Good, usable systems disappear almost by deiinition. The easier they arc lo use, the harder they are to see.

Table 1.1 A definition of infrastructure

This categorical saturation furthermore forms a complex web. Al­though it is possible to pull out a single classification scheme or stan­dard for reference purposes, in reality none of them stand alone. So a_ subproperty of ubiquity is interdependence, and frequently, integra­t10n. A systems approach might see the proliferation of both standards and classifications as purely a matter of integration-almost like a gigantic web of interoperability. Yet the sheer density of these phenom­ena go beyond questions of interoperability. They are layered, tangled, textured; they interact to form an ecology as well as a flat set of compatibilities.

Ubiquity __ The first major theme is the ubiquity of classifying and standardmng. Classification schemes and standards literally saturate our environ­ment.

This chapter offers four themes, methodological points of departure for the analysis of these complex relationships. Each theme operates as a gestalt switch-it comes in the form of an infrastructural inversion (Bowker 1994). This inversion is a struggle against the tendency of infrastructure to disappear (except when breaking down). It means learning to look closely at technologies and arrangements that, by design and by habit, tend to fade into the woodwork (sometimes literally!). Infrastructural inversion means recognizing the depths of interde­pendence of technical networks and standards, on the one hand, and the real work of politics and knowledge production8 on the other.

Infrastructures are never transparent for everyone, and their work­ability as they scale up becomes increasingly complex. Through due methodological attention to the architecture and use of these systems, we can achieve a deeper understanding of how it is that individuals and communities meet infrastructure. We know that this means, at the least, an understanding of infrastructure that includes these points:

Information infrastructure is a tricky thing to analyze.6 Good, usable systems disappear almost by definition. The easier they are to use, the harder they are to see. As well, most of the time, the bigger they are, the harder they are to see.