Trust Drift

Yesterday, the BBC reported something rather unusual. Cereal manufacturer Kellogg’s has acknowledged that the famous snap, crackle, and pop sounds of UK Rice Krispies and Coco Pops have become »noticeably quieter«, after whole rice grains were replaced with a corn-flour and rice-flour blend.¹ The company blames bad weather disrupting Spanish rice harvests, and says retaining the sounds was »a huge focus«. Consumers disagree: the cereal has lost its pop and tastes stale. Some children refuse to eat it.

»The crackle was never the goal. It was the acoustic signature of the solution to a yield problem. A century on, the shortage has returned, except now the sound is being sacrificed rather than gained«

It’s not the first time a rice shortage has shaped this cereal.

Indeed, Rice Krispies began as a solution to a problem of waste. The standard flaking process required large, intact rice kernels, leaving smaller and broken grains unused. Kellogg’s found a way to turn them into ribbons, then broke, puffed and toasted them into crisp fragments. Tiny air pockets form behind starch walls as rigid and brittle as tempered car-window glass; milk pressurises the trapped air until the walls snap.² The crackle was never the goal. It was the acoustic signature of the solution to a yield problem. A century on, the shortage has returned, except now the sound is being sacrificed rather than gained.

Losing a cereal’s crackle is a small thing – a shrug, at most. But what decides when the same quiet drift between a sign and what it reports stops being something you can shrug off?

Kellogg’s coined the »Snap! Crackle! Pop!« slogan in 1929. Illustrator Vernon Grant turned the words into three elves in 1932, which were animated for children’s television in 1955.³ A real sound had acquired a manufactured identity.

Polymath Charles Sanders Peirce distinguished between index and symbol. An index is causally connected to what it signifies: smoke points to fire. A symbol acquires its meaning through shared understanding.⁴ Snap, Crackle and Pop are symbols; the crackle of puffed rice in milk is an index. Kellogg’s has built a brand around this physical signal, but the signal is now fading. The company has changed its products before, reducing sugar in 2018 and salt in the 1990s, in both cases presenting the changes as health benefits rather than cost measures.

In The New Soundscape, composer R. Murray Schafer coined »schizophonia« to describe sound separated from its source through electronic reproduction.⁵ We encounter such separations constantly: phones make shutter clicks without shutters; plugins add vinyl crackle to recordings that have never touched a record. The sound survives, but its original source is gone. We shrug because we know it’s an effect.

The connection between dollar and gold offers a more consequential example. Until 1971, foreign governments could exchange US dollars for a fixed quantity of gold. President Richard Nixon closed the gold window, yet the dollar survived as the world’s principal reserve currency. Confidence shifted from the gold guarantee to American economic power and deep financial markets. The system became its own guarantee.⁶

The credit-rating agencies before 2008 show the opposite outcome. They gave top ratings to mortgage securities backed by risky loans. Investors trusted those ratings even as the loans began to fail. When confidence collapsed, the damage spread far beyond the agencies themselves. In his 1970 paper »The Market for ‘Lemons’«, economist George Akerlof showed how markets unravel when buyers can’t tell good products from bad.⁷ When signals of quality can no longer be trusted, the market itself is at risk.

The difference between a quieter cereal and a financial crisis lies in how much depends on the signal. Sometimes very little, and we shrug. Sometimes the system adapts and finds a new basis for confidence. Sometimes people continue making decisions on the assumption that the signal is true, until the discrepancy becomes catastrophic. One failure, three outcomes.

Call this trust drift – the gradual separation of a trusted sign from the reality it is supposed to represent. In engineering, signal drift describes a measurement moving away from its true value. The social version is harder to catch: the instrument is convention, and nobody using it can recalibrate it. The damage happens in the interval between failure and recognition. By the time the crackle changes, a world may already have been built around hearing it.

Kellogg’s says the weather has changed. Perhaps it has. The explanation may be true, or incomplete, or just convenient. How many other signals have drifted from what they claim to measure, and how much have we built on the assumption that they haven’t?

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