“This will mean working long hours at high intensity. Only exceptional performance will constitute a passing grade.”

Twitter is shifting to an engineer-driven operation—one that “will need to be extremely hardcore” going forward, according to the midnight email from Elon Musk to his remaining employees who were asked to click an icon and respond by Thursday if they wanted to stay with the company. The email was obtained by The Washington Post as reported in their story “Musk Issues Ultimatum to Staff: Commit to ‘Hardcore’ Twitter or Take Severance.”