Scenario selection: bias and blueprint
Every scenario is a hypothesis: it reflects not only market data but the
analyst’s imagination and implicit bias. The selection process shapes perceived
vulnerability—just as an architect’s blueprint dictates the strengths and
weaknesses of a building. In rare-event hedging, a scenario’s value comes from
its plausibility and its capacity to expose hidden connections.
Fire drill versus simulation
Technical analogy matters: stress testing is less like running a simulation and
more like rehearsing for a fire drill. The value lies in what the drill reveals
about process, not the precision of the imagined fire. Modelling for rare events
means interrogating failure points, liquidity gaps, and operational responses
rather than producing elegant but fragile numbers.
Regulation as floor, not ceiling
Australian regulatory requirements set a minimum standard, but sophisticated
practitioners see regulation as a floor, not a ceiling. Scenario-based reviews
that incorporate market structure, historical anomalies, and capital allocation
nuances offer real-world utility well beyond compliance. The principle: dissect
the mechanics, question the scenario, and the so-what becomes clear—robustness
is designed, not hoped for.
