Why decisions need rehearsal, not another dashboard
Field notes and practical methods for teams working with complex human systems.
Read the brief ↗WorldSim journal
Notes from the simulation frontier.
Research, product thinking and field notes on modeling behavior, environments and consequential decisions.
Featured essay
What changes when consequences become visible?
A practical introduction to decision rehearsal: how controlled alternatives, behavioral agents and evidence-linked outcomes change the way teams choose.
Latest ideas
Written by the people building WorldSim and collaborators across simulation, research and applied decision science.
Modeling human behavior without pretending humans are deterministic
Field notes and practical methods for teams working with complex human systems.
Read the brief ↗From Paris streets to product launches: environments as evidence
Field notes and practical methods for teams working with complex human systems.
Read the brief ↗What calibration means for an AI forecast
Field notes and practical methods for teams working with complex human systems.
Read the brief ↗How teams can use counterfactuals responsibly
Field notes and practical methods for teams working with complex human systems.
Read the brief ↗The case for visible uncertainty
Field notes and practical methods for teams working with complex human systems.
Read the brief ↗