Anchor: However, one thing that should emerge quite clearly from the discussion of design features intrinsic to the case study is that it can be a rather costly endeavor, given the time required, the rich in-depth nature of the information sought, and the need to achieve credibility.
Entailed: It can be quite costly to perform a case study.
Contradiction: Case studies are most often very cost-effective.
Contradiction: the man was inside reading
Contradiction: A man is taking down his christmas stocking.
Contradiction: Someone is eating a pizza.
Contradiction: All of the different things, you know.