Theory:Doctor Who television discontinuity and plot holes/The Crusade


 * It sounds a bit odd (to me) for Vicki, who is from the 22nd century, to use the term The Holy Land.
 * From what Vicki has revealed she was thoroughly educated and must have a comprehensive knowledge of the history of the civilized world. When she realizes they have landed in the time of a Crusade of Richard the Lionheart she uses the appropriate term for the location.