Tech billionaire Elon Musk has shifted from challenging Facebook CEO Mark Zuckerberg to a cage fight to now proposing a “noble” debate instead.

Business Insider reports that Elon Musk, the billionaire owner of companies like Tesla, SpaceX, and most recently Twitter (now known as X)  has taken a step back from his earlier challenge to Mark Zuckerberg for a cage fight. Instead, Musk is now floating the idea of a “noble” debate with the Facebook CEO.

The change of heart came after Musk revealed on Sunday that he might need to undergo surgery before the proposed cage match. “May require surgery before the fight can happen. Will know this week,” Musk tweeted.

The idea of a debate instead of a physical fight was further fueled by TED curator Chris Anderson, who proposed a “cage match DEBATE” between the two billionaires. Anderson tweeted, “Here’s a better idea: a cage match DEBATE ‘How to Build an Amazing Future.’” Musk responded: “sounds like a good idea too.”