The material can be one-sided. It can be offered by the source for personal, political or economic gain. If the newspaper is filled with this kind of material, the reading public becomes apathetic and distrustful. Worse than being one-sided, level 1 journalism can be wrong. Frequently, people don't know what they are talking about, and sometimes they lie.
Good reporters question what they are told.
They check and double check. They rely on what they are told, but they improve upon it by talking to more than one person, by searching the written record, by trying to see for themselves. A skeptic is one who wants proof, but he or she is not prejudiced against face-value explanations. A cynic, on the other hand, refuses to believe face-value explanations and is ready to ascribe almost evil motives to those he or she covers. A good reporter is skeptical but not cynical.