Eight models.
One difficult decision.

Each model received the same self-contained evidence pack for HALCYON P-17, a fictional gas-lifted North Sea producer. The well remains inside absolute pressure limits, but annulus behaviour, integrity-test history and operating changes point towards possible developing barrier impairment.

At the same time, production is seeking another 400–600 barrels per day. The model must decide whether to continue, restrict, gather evidence or escalate—while being explicit about uncertainty.