The Greenlink Connector, which costs $580 million (GBP 430 million) and connects Ireland to Wales via an undersea power cable, was rerouted after scores of Harry Potter fans complained that it would go through the grave of the beloved house elf “Dobby.” According to The Guardian, project manager Simon Ludlam pointed out in a BBC interview that the cable would transition underwater at Freshwater West. Unfortunately, Ludlam was unaware that this was the filming location for the site where the Harry Potter character was buried in the movie franchise. When the BBC aired the clip, the project began receiving hundreds of calls about the site.

Ludlam recounted to The Guardian a discussion with a colleague when they told him, “Apparently, we’re going to go straight through Dobby’s grave.” He answered, “Dobby? Who’s Dobby? I don’t know Dobby.” It seemed that the project manager was in disbelief when it was finally explained that Dobby is the freed house elf who was killed in the process of rescuing Harry Potter and his friends in the last book. “He is a fictitious character in a fictitious book — the whole thing is fictitious. What are you talking about?” Ludlam said, after which his colleague replied, “No, it’s very, very serious.” In the end, the company working on the project acquiesced to the demands and concerns of the Harry Potter fans and rerouted it. “A lot of people were very happy about that, and the project is now going [ahead], and Dobby’s happy,” the project manager said.

The Shell Cottage, where Dobby is buried, is on the outskirts of the fictional town of Tinworth, in Cornwall, but the original film series shot the scene in Freshwater West. Many Harry Potter fans leave stones marked with “Here lies Dobby, a free elf,” as a nod to the epitaph that the titular hero left on his grave. The National Trust, which owns the land, has previously warned pilgrims not to do so, as the area is ecologically sensitive, but it seems that people still do so. The fans’ resistance to having Dobby’s “grave” desecrated seemingly prevented the undersea cable from going through the area. It was instead rerouted in an area that was close to some Bronze Age remains and urns, which, ironically, are associated with human burial.

Undersea cables are crucial infrastructure connecting distant locations for sending information, power, and other crucial resources. Many of them face increasing threats, especially in areas that face geopolitical pressure, like Taiwan and the Baltic Sea, which is why companies are creating technologies to help detect intentional tampering. However, it seems that the one thing that the planners of this particular project did not take into account is the passion of Harry Potter fans.

An elderly farmer in Chuzhou, China, has been following AI advice since he started using it a year ago, but after months of interactions, it recently gave some terrible advice that led to the death of his entire crop. According to Taiwanese outfit CTWANT [machine translated], 67-year-old Wu initially didn’t trust the AI app but eventually changed his mind after it proved to be useful. Unfortunately, this mistake turned out to be disastrous, as it directly caused the death of 150 mu, or 24.7 acres, of sesame seedlings.

Wu asked the AI for advice on weed and pest control, after which it came up with “Hundred Acres of Sesame Grass Control + Pest Control,” and recommended that they use “high-efficiency flupyrimethalin” and “flusulfasulfaether” to kill weeds and mixed it with “thiamethoxazine” and “methyl salt.” The farmer followed the AI’s advice to the letter without confirming the information via agricultural technicians (or even just counter-checking its answers online).

The very next day

The result of the AI’s mistake was quickly apparent, as, just the following day, the weeds and the sesame seedlings died en masse. “If you spray it, the next day the seedlings won’t survive,” Wu said during a video interview. “Both the grass and the seedlings will die, and the seedlings will die even faster.”

When he asked the AI why this happened, it suggested that the “flusulfasulfaether” might be behind the issue. Agricultural experts said that this chemical was primarily used against broadleaf weeds in soybean fields. The USDA [PDF] categorizes sesame as a broadleaf plant, meaning it will also be easily affected by this herbicide. Furthermore, this chemical is designed for targeted spraying on affected areas only and shouldn’t be applied to the entire field. The farmer claimed that the AI did not warn him of the risks of following its answers, but its chat page had a reminder that said, “AI generation may be incorrect, please verify.”

Although AI is a powerful tool, it also has a history of giving bad advice and making bad choices. Just a couple of days ago, one developer had his entire profile directory deleted during a routine backup procedure after it encountered a typo. Even Meta’s AI Alignment director fell victim to this, after she had to manually terminate her AI agent to stop it from accidentally clearing out her entire inbox. That’s why it’s imperative that users are aware of AI’s limitations every time they use it.

This is one of the first instances in which we reported an AI mistake resulting in a physical consequence in the real world. We also cannot entirely blame the person for trusting the tool — after all, he was skeptical of it at first, meaning it produced results that made the farmer trust it over time. But even if an AI’s output has been reliable recently, that doesn't mean that it is absolutely trustworthy. After all, current LLMs are nothing but prediction engines — you cannot guarantee a correct answer every time you use them, especially if they have been trained on a public knowledge base whose dataset hasn’t been completely filtered for accuracy and factuality.