Elon Musk is seeking to reassure big companies that advertise on Twitter that his chaotic takeover of the social media platform won’t harm their brands. He acknowledged that some “dumb things” might happen on his way to creating a better, safer user experience. The latest erratic move on the minds of major advertisers was Musk’s decision to abolish a new “official” label on high-profile Twitter accounts just hours after introducing it. Twitter began adding the gray labels to some prominent accounts, including brands like Coca-Cola, Nike and Apple. A few hours later, the labels started disappearing.