I always enjoy a conference where you feel a major directional change is happening. The Defence Test and Evaluation Conference (DTEC) was such an amazing event. It was the feeling that traditional engineering, V&V and assurance thinking were no longer sufficient. My keynote talk was on connecting many digital twins (from device levels to system of systems, across federated entities) using emerging technologies like sharing without access, mode-to-data, synthetic data/representations and confidentiality-preserving SBOMs across supply chains (CSIRO’s Data61). It was moving away from a big single digital twin with all the data copy-dumped into a single platform. And I also appreciated the coin tradition. I think I have started to have a small collection now!