A continuity error occurs when a reference is made in a show which is later contradicted by another reference later in the same show or in a later episode of the same series. For a series like M*A*S*H, stretching over 11 Seasons and with multiple writers, continuity errors are understandable and as Ken Levine (one of the series writers) says, there was no series bible. Nonetheless tracking continuity errors is still a fun activity for many fans. However let's not count the following as continuity errors: