Revealing mistake: During the "power outage" when Brian is out on the street during the day, all the stop lights and cross walks are on - you can also see the lighting is on in the windows of office buildings.
Limitless (2015)
1 revealing mistake - chronological order
More mistakes in Limitless
Brian Finch: I can be really annoying when I'm on NZT.
Agent Ike: We've noticed.