When Hondo is talking to Raymont about his math homework, he says that the volume of a sphere is 4/3 pi r squared. The volume of a sphere is 4/3 pi r cubed. Mathematical formula error.
The psychologist said she had a Sony Playstation 4 in her office and she challenged Raymond to a game of NBA 2K. Later, when the two were playing the game, both she and Raymond were using XBOX ONE controllers and the console was clearly an XBOX ONE S.