OpenAI’s researcher in charge of making sure the company (and the world) is prepared for the advent of artificial general intelligence (AGI) has resigned — and is warning that nobody is ready for what’s coming next.

In a post on his personal Substack, the firm’s newly-resigned AGI readiness czar Miles Brundage said quitting his “dream job” after six years has been difficult. He says he’s doing so because he feels a great responsibility regarding the purportedly human-level artificial intelligence he believes OpenAI is ushering into existence.

“I decided,” Brundage wrote, “that I want to impact and influence AI’s development from outside the industry rather than inside.”