A good case study explicitly identifies alternative explanations, lays out the chain of reasoning, and makes clear which conclusions rest primarily on the investigators' insightful recognition of patterns of evidence and which have been recognized in other ways.
The presence of alternative explanations is the mark of a good case study.
Only bad case studies lay out a chain of reasoning.
A boat is speeding across the water.
Hundreds and hundreds people became homeless when the aftershocks in October occurred.
The wind blows over the sand dunes.
Yes, you do.
A horse rider is jumping over a fence.
It is not popular.