That... probably means he's Numbered, which is answer enough for Phillip to stop asking the more direct questions. If Jacob doesn't want to let normal people know he's Numbered, then that's not a thing Phillip of all people is going to force on him.

"Oh, I do a lot of theater stuff. So Mr. Factor thought I could deliver a good speech!" Which turned out to be true, even though Phillip hadn't been totally prepared to actually write one.