A former acquaintance of Elon Musk, the CEO of Tesla, has issued a warning that Musk has not truly moved on from his public feud with former US President Donald Trump. In 2021, neuroscientist Philip Low, who had once welcomed Musk as an early investor onto the advisory board of his Silicon Valley startup, terminated Musk's involvement. This experience provided Low with a stark insight into Musk's reluctance to forgive.