Continuity mistake: When Don and Sloan are in her office discussing the economic tip, Sloan's hair repeatedly jumps from straight down to tucked behind her ear.
Revealing mistake: When Elliot and Maggie first arrive in Boston and Elliot begins reporting on the 31 injured patients, in several shots Maggie is supposedly on the phone with Jim back in New York. In each shot if you look closely you can see her iPhone's screen is lit up and is on the home screen, meaning she isn't actually on the phone.
