Roger Henry confirms David Rohl's contention that the conventional Egyptian Chronology is in error. He extends Rohl's area of study to the entire middle east, and especially Greece. In the past scholars have attempted to conform their work to conventional Egyptian chronology which has required a 500 year "dark age" over the entire middle east. Eliminating this "dark age" permits middle east history to flow smoothly without obvious "disconects". For instance the evolution of alphabetic writing is now smooth and flowing. Henry does not agree with Rohl on all details, but future scholars can resolve these discrepancies.