He's just curious and your programs just aren't challenging him. That's no excuse to plant doubt in the Brood, Doctor. He has an appetite for learning. The only critical thinking the brood needs to learn is the difference between right and wrong. She's right, Doctor.
Outside perspectives are ancillary once one knows the Truth.
It's not like Joshua's popular among the brood. None of the others would miss him anyway. He's just research tissue for goodness' sake. Faye her mail. Faye takes it without batting an eye.