This article reminds me of The Art of War, wherein Sun Tzu often classifies different war-adjacent concepts in terms of the number 5 - - 5 types of terrain, 5 t

This article reminds me of The Art of War, wherein Sun Tzu often classifies different war-adjacent concepts in terms of the number 5 - - 5 types of terrain, 5 types of spies, etc. As you read you can tell there are obviously more than five types of something. Yet the classifications are not without use. They serve to focus the reader on perhaps the "top 5" things, and serve to keep the text short while also still useful. Surely there are more types of corporate research teams than four, but I still find the formulation instructive. I can see why these types of research activities deserve treatment and discussion. Further, the article made its point neatly in just a few paragraphs.