Anchor: Case studies involve what methodologists call thick  rich, full information that should come from multiple data sources, particularly from firsthand observations.
Entailed: Firsthand observation are treated as a rich source of information by the methodologists.
Contradiction: There is only one source of information for the case studies of methodologists.
Contradiction: He's not on the case now, and wants everyone to be aware of it.
Contradiction: A woman is holding an electronic device.
Contradiction: The boy is playing games.
Contradiction: A reporter sits outside and reads from his notes.