Rescue from the Tham Luang cave and the libel case of Elon Musk

In July 2018, Musk arranged for his employees to build a mini-submarine to assist the rescue of children trapped in a flooded cavern in Thailand

Richard Stanton, leader of the international rescue diving team, urged Musk to facilitate the construction of the vehicle as a back-up, in case flooding worsened.

Engineers at SpaceX and the Boring Company built the mini-submarine from a Falcon 9 liquid oxygen transfer tube in eight hours and personally delivered it to Thailand.

By this time, however, eight of the 12 children, had already been rescued, the rescuers employing full face masks, oxygen, and anesthesia; consequently, Thai authorities declined to use the submarine.

In March 2019, Musk was later one of the 187 people who received various honors conferred by the King of Thailand for involvement in the rescue effort.

Soon after the rescue, Vernon Unsworth, a British recreational caver who had been exploring the cave for the previous six years and played a key advisory role in the operation

criticized the submarine on CNN as amounting to nothing more than a public relations effort with no chance of success,

maintaining that Musk "had no conception of what the cave passage was like" and "can stick his submarine where it hurts". Musk asserted on Twitter that the device would have worked and referred to Unsworth as a "pedo guy"

He deleted the tweets and apologized and he deleted his responses to critical tweets from Cher Scarlett, a software engineer, which had caused his followers to harass her.

In September, Unsworth filed a defamation suit in Los Angeles federal court. In his defense, Musk argued that "'pedo guy' was a common insult used in South Africa when I was growing up synonymous with 'creepy old man' and is used to insult a person's appearance and demeanor". The defamation case began in December 2019, with Unsworth seeking $190 million in damages. During the trial Musk apologized to Unsworth again for the tweet. On December 6, the jury found in favor of Musk and ruled he was not liable.

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