I suspect there's more to Juliette's dad

Dr Nichols lives on the middle floors which I think as far as silo convention goes means he's middle-class, or has quite an average stature, and yet he's one of the few people in the whole silo to know that peoples birth controls aren't being removed when they're told they are.

That's a huge secret to trust with someone so average.

I'm wondering if we're going to find he's more powerfull than he seems. Or perhaps he's being blackmailed.