Revealing mistake: Healy tears off the October 26 sheet from the calendar, and before the camera cuts away, it shows the October 25 sheet underneath it. That's not how calendars work. (00:11:25)
Revealing mistake: Jackson is fighting with the older guy at the party. In their struggle, the gun fires once. Ryan Gosling turns around at the appropriate time, but half the extras react to the supposed noise a second late, some don't even do that. (00:48:00)
Revealing mistake: In the shootout on the roof, the CGI blood spurts are phony, their light does not match the scene. (01:41:00)
