In the first installment of Monsters Inc., you probably remember that when Boo, the only human to go cross the door to the monster’s world, cries or laughs, the whole electric network suffers from a sort of outage. Somehow, this is much more noticeable when the 3 of them are in Mike and Sully’s apartment. Interestingly enough, when Randall kidnaps Boo, she’s tied up in a chair and she is screaming, but the electricity seems to work just fine.