People could get a thorough understanding of a particular political issue by sorting through information provided by several traditional news sources, each with differing editorial biases. Most people who get information on political issues from newspapers and other traditional news sources can readily identify the editorial biases of those sources. Information on political issues disseminated through information services does not come almost entirely from advocacy groups that share a single bias. Traditional news sources seldom report the views of political advocacy groups accurately.
Political advocacy groups have begun to use information services to disseminate information that is then accessed by the public via personal computer. Since many groups are thus able to bypass traditional news sources, whose reporting is selective, and to present their political views directly to the public, information services present a more balanced picture of the complexities of political issues than any traditional news source presents.
Which of the following is an assumption on which the argument above depends?