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 mistake in Close Encounters
Brian Finch: You remember a lot more than you think you do. Every experience you've ever had, every idea that came to you in the shower and then slipped away while you were brushing your teeth... it's all there for the taking.