Four annuals are enough here to cross a decade of war, but the method is not mechanical. Its quantitative side determines how many sample points to select and how consistently to space them. Its qualitative side decides which chapters, examples, and categories best answer the research question. That combination of transparent selection and informed interpretation is the central research lesson of the video.
Chapter · 59:03-1:00:14
Combining quantitative and qualitative sampling
The closing reflection defines the method as both quantitative selection of sample points and qualitative judgement about what to compare within them.