The team and the machine concluded that the checked proof was correct.

“You know, Peter's like, "No, I think it's right. My co-author thinks it's right, Dustin Clausen. No one else has read it. Maybe it's wrong." So six months later, we'd read it through and was like, "It's okay.”

“It's right. The machine says it's right." And Peter got very excited, was just like, "Okay, so these systems are actually useful because they taught me something about how the proof works.”