The key reason for using the constant comparative method is identified by Dey (1993: 88) Dey (1993: 88): "Comparison is the engine through which we can generate insights, by identifying patterns of similarity or difference within the data".
The key reason for using the constant comparative method is identified by Dey (1993: 88) Dey, I. (1993) Qualitative Data Analysis: a User-Friendly Guide for Social Scientists. Routledge: "Comparison is the engine through which we can generate insights, by identifying patterns of similarity or difference within the data".