Anchor: However, the implications of the design features discussed here are that, contrary to what many people think, the case study is not necessarily inexpensive, easy to conduct, or quick.
Entailed: The case study isn't necessarily easy to conduct.
Contradiction: The case study is always easy to conduct.
Contradiction: I don't see a good reason why he roughhoused them.
Contradiction: A human climbing a rock wall.
Contradiction: a cow eats leaves
Contradiction: The man is holding something