 Hospitals doubling as schools not only provided hospitals with more fresh working hands but also helped in the advancement of medicine.Education in hospitals during the Islamic period modernized hospitals today in that now before people can become doctors they must complete a period of residency in which students study at a hospital and job shadow licensed physicians for a number of years before they are fully able to become licensed physicians.This came at a time when much of Europe's medical practices were much less advanced, and with the compilation and creation of Avicenna's (Ibn Sina) medical textbook, the “Canon of Medicine,” these groundbreaking Islamic discoveries were able to influence Europe and the rest of the world for centuries to come.