The idea is that once the sequence of events is provably intact, you can attach the decision context to it — things like policy snapshots, inputs/prompts (or hashes of them), and state transitions.
Then the evidence layer proves the history wasn’t altered, and analysis tools can reconstruct why the system made a particular decision from that preserved context.
The demo focuses on the integrity layer because without that everything else turns into “trust our dashboard.” Interpretability tools can sit on top of the same evidence