What does a complete qualitative and quantitative data feedback loop look like, from instrumentation to optimisation?
Instrumentation can locate where behaviour changes. Qualitative method can explain what the gap means. Experimentation and optimisation can test whether the response actually improved the system. The missing piece is a practical methodology that treats those as one loop rather than separate research, analytics, and CRO rituals.
Working theory: the loop is: instrument the behaviour, detect the anomaly, investigate the meaning, redesign the interaction, test the intervention, and feed the result back into the schema. Quantitative data tells the system where to look. Qualitative method explains what question to ask next. Optimisation closes the loop by proving whether the answer held.