You give Gino even more credit than I do. I don't know what he was like in the beginning, but I suspect he might have been a bit like Akane: Really good grades out of school and believing everything the books told him. However, he wasn't lucky enough to have somebody like Kogami to demonstrate concretely what a real detective is like. Instead he witnessed somebody like the past Kogami to get too involved, too crafty, and ruin his psycho-pass. As a result, I believe, he shut his mind even more to the outside world and got stuck to thinking inside the box (only following the textbooks) and keeping his feelings, including intuition, strictly locked away during working hours. So, he became a walking proxy of the Sybil system.

I'm still not altogether sure the Sybil system is 100% foolproof. I won't believe that before Makishima is scanned. Possibly also the tool supplier, but he might be just an ordinary thug following instructions.

I wonder if the teacher (or was he even the principal) got fined because he obstructed a law enforcement officer.