Revealing mistake: In the scene where Reese Witherspoon is entering the elevator after being harassed by her mentor, you can see Selma Blair's reflection in the plaque right before her cue. You see her reflection right before the doors close, so you know she was waiting for the cue. (01:12:20)
Revealing mistake: When Elle is talking to Paulette on the cell phone, while waiting for the water, the woman before her goes to the water fountain, and you see her. She doesn't drink any water. She just puts her mouth next to the fountain. It is extremely obvious.
Revealing mistake: When Elle and Emmett are talking on the benches, a girl in a blue-gray shirt and red tie leaves the building twice.
Suggested correction: It's entirely possible that this girl just re-entered the building through a different entrance and left again.