History is written with a pen of those whose influential position and path given the vehement gratitude to choose will be among those who finish them as testimonials protagonists of the facts or simple parade of troupes, ornament of the passing of a period in time. Not always it can claim to be objective, nor so if you want to strive to be impartial when what is to tell the story, since the historical memory aims to support and the encouragement of human learning. To this end no doubt are explained according to a calculated interest and developments in order to only show the grandeur of achievements of its analogues. "As the decades happen, sometimes they swap the point of view of the facts, are reviewed with something more than objectivity circumstances that marked his home and the reason for the consequences, to alter the reasoning and turning the role of players that go out of "magnanimous" or heroes, reviled, cruel, unable and faint-hearted cowards.
"Historians explicitly describe events that happen and happened over time, not always with the prudent and sufficient objectivity... Since the absolute impartiality and objectivity does not exist, it is inevitable easy victim of certain sympathies, prejudices and weaknesses that undoubtedly reflected in the testimony of his works".