Elon Musk's company is staying public, and so are his thoughts. The head of Tesla took to Twitter on Tuesday night to return to a subject that has caused him grief in the past: the British cave diver whom he called "pedo guy." Vernon Unsworth, who helped free the soccer team trapped in a Thai cave, had been sharply critical of a mini-sub Musk developed to assist with the rescue. Musk's slam, for which he ultimately apologized, followed, but not eternal silence on the topic: When replying to Twitter user @yoda on Tuesday he, in the Guardian's view, "appeared to reaffirm the accusation." You can read the full exchange here, which started with a third user tweeting a Forbes profile on Musk; @yoda was commenting on it and eventually wrote, "Your dedication to facts and truth would have been wonderful if applied to that time when you called someone a pedo." In the subsequent exchange, Fast Company sees an "insinuation": That Unsworth hasn't sued as he threatened to because he truly is a "pedo." The tweets: