What kind of world do we want to help make with our theories?

- Research theories and methods are performative; they do not only represent reality, but also produce it.
- Systems theory creates a world populated by stable entities that interact with each other without altering the interdependent entities.
- In contrast to substantialist theories like systems science, relational ontologies treat practices (rather than entities) as primary.
- Relational theories are more likely to advance theorizing of contemporary IS phenomena characterized by sociomaterial entanglements.

In response to Demetis and Lee's proposal that Information Systems needs to adopt system science in order to live up to the identity implied by its name and in order to develop better theory, this commentary seeks to answer two questions: What kind of reality does systems science produce? And, given that technological advances have moved the IS research agenda beyond the organizational realm, how likely is it that systems science will help generate better IS theory? Drawing on a relational ontology, reflections on these two questions are offered.