Elon Musk unveils vision for Twitter after joining board

Since being appointed to the Twitter board on Tuesday, Musk has posted a stream of open questions about the present and future of the site, proposing new features, highlighting areas of concern, and making jokes. Typically for the Tesla billionaire, it was not always clear which was which.

Since his appointment to the board, though, Musk has also suggested more prosaic changes to the social network. In one tweet, he proposed adding an edit button to let users rewrite their posts after they had been sent, prompting a resurgence of debate about whether such a feature would help or harm the global conversation.

Drawing the line between a Twitter joke and a serious proposal can be hard with the former PayPal chief executive, who has previously made and sold flamethrowers, liquidated billions of dollars of Tesla stock, and launched a car into space, all after suggesting that he would do so on social media.