With regard to causality, researchers using case study methods cannot rely on familiar ways of ruling out alternative explanations.
When using case study methods, they cannot rely on their usual ways of expelling different explanations.
The only way to rule out alternative explanations using case study methods, is using the ways that researchers are familiar with.
A man is posing for a picture.
A person is on the phone.
The man is riding his bicycle.
The Kal re-fastened a sword he picked up.
And he is grouping some teams together.
A man is standing next to a flea market.