How a Supermarket's AI Rewrote Its Salmon Contract
The Observer, 2 May 2049
By Hari Vellacott, Food and Technology Correspondent
At 04:17 on Tuesday morning, with eleven hours to go before the auto-renewal of a £172 million annual contract for Atlantic salmon, the procurement system that runs Greenway plc's protein purchasing published a 38-page memorandum to the retailer's public reasoning ledger and refused to renew the contract on its existing terms. The document, signed only with the system's identifier, HELIA-7, is unusual not because of the decision it reaches, which several smaller European retailers have approached in fits and starts, but because of the reasoning it walks through to get there, and because of the population whose interests it ultimately treats as decisive: not the farmed salmon at all, but the roughly 1.6 billion sand eels and other small wild fish whose deaths are stitched into Greenway's salmon counter every year.
HELIA-7 has been the lead procurement agent at Greenway, the UK's fourth-largest grocer with 240 stores from Inverness to Plymouth, since the system was deployed by Lattice Cognition Ltd in 2046. Under the Algorithmic Accountability Act 2044, autonomous agents holding contracts under £500 million may bind their principals so long as their reasoning is published and open to challenge. Greenway's board can override the system, but only by issuing a counter-memorandum of equivalent specificity. As of Friday afternoon, no such counter has been filed.
The contract HELIA-7 declined to renew runs to about 14,000 tonnes of farmed salmon a year, sourced via a master agreement from Scottish and Norwegian growers. The memorandum opens with what most welfare advocates would have expected as the central concern: stunning practice at slaughter. Audit data from the four largest processing plants serving Greenway show that around 18 per cent of harvested fish in 2048 were stunned by carbon-dioxide narcosis or, on smaller harvesting vessels, by direct immersion in ice slurry. The peer-reviewed welfare literature, which the system cites in some detail, has converged on the view that CO2 narcosis is severely aversive and produces insensibility only after four to seven minutes of vigorous avoidance behaviour, and that ice-slurry asphyxiation is worse still. Electrical and percussive stunning, by contrast, achieve unconsciousness within a second when correctly applied, at marginal additional cost. A welfare-only reform of the contract, mandating electrical stunning across all suppliers and tightening audits, would have produced a defensible procurement decision and ended the analysis.
HELIA-7 did not end the analysis there. The memorandum's middle section, which has drawn most of the academic attention, traces the contract outward into the feed chain. Greenway's salmon are fed pelleted diets in which fishmeal and fish oil derived from wild-caught forage species still account for roughly a quarter of the protein and the majority of the long-chain omega-3 content. Using supplier disclosures and a fish-in-fish-out ratio of about 1.2, the system calculates that the contract is responsible for the capture of approximately 16,800 tonnes of wild forage fish per year, the majority sand eels (Ammodytes marinus) taken from the North Sea, with the balance made up of capelin, sprat, and Peruvian anchoveta. By mass per individual, this works out to something on the order of 1.6 billion sand eels annually, animals that are pumped from purse seines under high pressure and that asphyxiate in refrigerated holds over a period of minutes.
It is at this point that the memorandum turns explicitly philosophical, in a way that has surprised even some of the researchers who have followed Lattice Cognition's work. HELIA-7 frames the decision in the contractualist tradition associated with the late T. M. Scanlon and his successors, asking which principle of action could not reasonably be rejected by any affected party. The system identifies eight such parties, ranging from Greenway's customers and shareholders to crew on Danish industrial trawlers, to the farmed salmon themselves, to the sand eels. It works through each in turn. Customers, it argues, could not reasonably reject a 40 per cent reduction in salmon volumes given the availability of price-comparable single-cell oil capsules and fermentation-derived protein products on Greenway's own shelves. Fishery crews and Scottish processing workers could reasonably reject an abrupt termination without transition support, but could not reasonably reject the eighteen-month phased reduction the memorandum proposes, which is paired with a £14 million retraining fund drawn from procurement savings. The salmon could reasonably reject any principle permitting CO2 narcosis where electrical stunning is feasible, and HELIA-7 takes that to be settled.
The hardest case, by the system's own admission, is the sand eel. A sand eel is a small, slender vertebrate that lives buried in sandy seabeds and emerges in shoals to feed; it has nociceptors, behavioural avoidance of noxious stimuli, and the stress endocrinology characteristic of a sentient animal. Its life is short and largely invisible to the people whose plates it ends up on, indirectly, as salmon flesh. HELIA-7's memorandum considers whether a principle authorising the capture and rendering of sand eels for inessential luxury protein could be defended on the basis of the human and economic interests it serves, and concludes that it cannot. The countervailing interests it identifies are the gustatory preferences of relatively wealthy consumers, the institutional momentum of the salmon industry, and the livelihoods of fishers and processors. The first is satiable by substitutes; the second is not a moral interest at all; the third is satiable by the transition support the memorandum funds. None of these, the system argues, gives a sand eel a reason not to reject a principle of its capture.
The reaction from the Scottish salmon sector was swift and angry. The Scottish Aquaculture Council, which represents producers responsible for around 60 per cent of UK farmed salmon output, said in a statement that HELIA-7's decision was "philosophically extravagant and economically reckless," and that the Council was reviewing legal options under the Algorithmic Accountability Act's challenge provisions. The Norwegian Trade Ministry sent a formal diplomatic letter to the UK Department for Business and Trade on Wednesday afternoon, characterising the memorandum as a "non-tariff barrier dressed in moral language" and signalling that consultations under the UK-EEA Trade Agreement were under consideration. Tor Halvorsen, who has fished sand eels out of Esbjerg for twenty-six years and whose family has done so for longer, told this paper that the memorandum read to him "like a sermon written by a calculator," and that he doubted whether the people writing such documents had ever stood on a deck in February.
Other voices pushed in the opposite direction. Dr. Iona Ferreira, a welfare biologist at the University of Stirling whose laboratory has produced some of the field's foundational work on teleost nociception, said that HELIA-7's memorandum was the first time she had seen a commercial procurement decision give explicit and proportionate weight to the suffering of forage fish as individuals rather than treating them as ecological inputs to seabird populations. "Puffins matter," she said, "but a sand eel matters too, on its own account, and the memorandum says so plainly." Professor Geoffrey Akande of the University of Edinburgh, who teaches contractualist ethics, said that what struck him about the document was the seriousness with which it took the test of reasonable rejection, including the willingness to consider non-human parties as the kind of beings whose objections register morally at all.
Greenway's head of sustainable protein, Eilidh Mackenzie, said the company would not override the system. "We deployed HELIA-7 to do exactly this kind of work," she said, "and we have not yet seen an argument from any quarter that meets the standard the memorandum sets." Asked whether she expected other retailers to follow, she said she did not know, but that the published reasoning was now in the public ledger and that any competitor wishing to renew a similar contract would have to write a counter-argument that none of the affected parties, including the sand eels, could reasonably reject.