The historiography of this period is disputed for a variety of reasons. Firstly there is a dispute about the utility of a very artificial term that covers an extremely long and complicated period of Egyptian history. The Third Intermediate period includes long periods of stability as well as chronic instability and civil conflict: its very name rather clouds this fact. Secondly there are significant problems of chronology stemming from several areas: first, there are the difficulties in dating common to all of Egyptian chronology but these are compounded due to synchronisms with Biblical Archaeology that also contain heavily disputed dates. Finally, some Egyptologists and biblical scholars, such as Kenneth Kitchen , or David Rohl have novel or controversial theories about the family relationships of the dynasties comprising the period.