Donald Akenson, Professor of Irish Studies in the department of history at Queen's University has argued that, with very few exceptions, the historians attempting to reconstruct a biography of the man Jesus of Nazareth apart from the mere facts of his existence and crucifixion have not followed sound historical practices. He has stated that there is an unhealthy reliance on consensus for propositions which should otherwise be based on primary sources, or rigorous interpretation. He also identifies a peculiar downward dating creep, and holds that some of the criteria being used are faulty.