Original sentence: Dwyer's case has become a favorite of a number of journalism professors to demonstrate that news editors (especially in the medium of television) must be prepared to make instant decisions, weighing the psychological impact on viewers against their business sense of beating other media outlets to the story
Edited sentence: Dwyer's case has become a favorite of a small number of journalism professors to demonstrate that news editors (especially in the medium of television) must be prepared to make instant decisions, weighing the psychological impact on viewers against their business sense of beating other media outlets to the story