Proceedings of an imagined compensation hearing
In 2113, growers in South Haven seek compensation for rain they say was diverted by atmospheric intervention. The commission has weather records and several reconstructions of conditions without intervention. The disagreement concerns how those reconstructions should be used.
DOCUMENT 4.13
Statement
01The Northern Straits Commission received a claim from South Haven's growers following decades of atmospheric intervention. The annual rainfall at the orchards was below the contractual threshold. The insurer argued that seasonal precipitation had been displaced; the ministry disputed the proposed cause.
02The gauges recorded what happened under intervention. Compensation depended on what would have happened without it. The commission asked three research groups to reconstruct that alternative. Their estimates were sufficiently close that the first hearing treated the average as established rainfall.
03Field meteorologists questioned the apparent agreement. The groups had used overlapping meteorological archives and similar assumptions about cloud behavior. The commission requested a separate appraisal of those shared assumptions. The presiding officer noted that payment decisions could not be deferred indefinitely.
04The revised judgment kept the reconstructions in the record and stated the rule used to decide compensation. The causal question remained disputed.
ANNEX B / ATTRIBUTION RULES
The three approaches differ in what the commission accepts as evidence. Choose one to read its likely consequences.
Treat agreement among the three model estimates as adequate grounds for payment.
A single estimate can be used to calculate the award without further hearings.
The models use much of the same evidence and some of the same assumptions. Their errors may be correlated.
The decision is faster, but its stated confidence needs qualification.
NOTES ON THE DRAFT
Scientific assessment
The first draft treats the unobserved counterfactual as unknowable. Attribution methods can constrain it using observations and physical models. Specify what is uncertain about these reconstructions, instead of dismissing the entire practice.
Rewrote the statement on causal attribution.Legal and social-science assessment
The meteorologists' preferred account leaves the actual compensation rule unspecified. The commission must still allocate losses. A model cannot decide that distribution.
Added a separate statement of the payment rule.Revised text
The commission accepted a range of plausible reconstructions and published the threshold used to decide the claim. Neither the scientific uncertainty nor the compensation rule was concealed in the average.
The concluding paragraph was replaced.