The Sandbox – Companion Deck

This Companion Deck accompanies the development of The Sandbox, a decision-oriented framework for preparing decisions under uncertainty in Research Infrastructures.

While the White Paper defines the conceptual framework, this document serves a different function: it makes the validation logic operational and explicit, focusing on how strategic assumptions can be translated into validation paths and tested through controlled experimentation.

The Deck illustrates how assumptions, experiments, measurement structures, and evidence are connected in the preparation of decisions. It provides concrete examples of validation paths and shows how evidence can be generated before irreversible commitments are made.

The document is part of a broader system of complementary components, including:

1. The White Paper (conceptual framework)
2. Organizational Conditions (decision authority and governance)
3. Applying The Sandbox (validation path design)
4. Operational Companion (tools and artifacts)
5. Reference Implementation (concrete instantiation of the logic)

This Companion Deck is intended as a practical support for interpretation and use, bridging the conceptual framework and its application in real-world contexts.