One of the biggest disadvantages of case studies is a lack of "generalizability".
A case study is a top to bottom investigation of a specific circumstance instead of a broad factual review. It is a technique used to limit an extremely wide field of examination into one effortlessly research able point while generalization, which is a demonstration of thinking that includes drawing expansive inferences from specific observations, is generally recognized as a quality standard in quantitative research, yet is more disputable in qualitative research.