Stupidity: Noah sends the little punk home with, according to the vice principal, a fractured skull. He's not a minor (the victim may or may not be), and with a savage beating ending up with damage of property and hospitalization of a kid, at school, should have led to something way more severe than 'being expelled' (which seemingly happened because he called her a c*nt, rather than the rest). And hilariously enough, a couple scenes later, the principal reprimands her for giving him, the nearly murderous maniac student, a slight push to keep him at distance (instead of say, checking if she had been assaulted herself).
Stupidity: At the end of the plane chase Bond fails to finish off Hinx. Regardless whether he thinks he's dead or not, with a licence to kill he should have made sure.
Stupidity: Nicholas Cage saves the kids coming out of the dark dimension exactly at midnight but gets back home at dawn. It should be noted that he has two other kids to bring back home and if we assume he did that already, it would explain part of the time discrepancy. In that case he kept his wife up all night when she was fearing for the safety of both without a word, but she's not upset or anything.