Anchor: A good case study report gives the numbers and positions of the persons interviewed and the evidence that they were appropriate for the evaluation.
Entailed: Analysis of the selection of interviewees is a component of a good case study.
Contradiction: A good case study has selected appropriate interviewees, so no justification is needed.
Contradiction: Yes indeed.
Contradiction: The case study is a way to learn about a complex instance.
Contradiction: The cover story predicts that human intelligence cannot be engineered.
Contradiction: The man is walking.