Data shows what happened. Behaviour explains why people chose it.

Businesses have never had more behavioural data and yet they can still misunderstand the customer. That sounds contradictory only if we assume the record of an action is the same thing as the reason for the action. It is not. A click, a purchase, a churn event or a conversion tells us what happened. It does not automatically tell us what the person was trying to achieve, what they feared, what they compared or why that choice felt right at that moment.

This distinction matters because growth decisions are built on interpretation. If the interpretation is wrong, optimisation becomes an efficient way to move in the wrong direction. Teams can improve a funnel while weakening trust, increase short-term response while making the brand easier to replace, or personalise communication without understanding what the customer actually values. More measurement does not remove the need for judgement.

Human behaviour also explains why apparently irrational choices are often perfectly coherent from the customer's point of view. People use signals, stories, identity, convenience, emotion, social proof and habit because deciding has a cost. The business that understands those mechanisms can design a better product, a clearer offer and an experience that reduces uncertainty. The business that ignores them often ends up compensating with discount, media pressure or complexity.

My interest in behaviour is therefore practical. The point is not to admire psychology; it is to use it to build better businesses. Academic work gives language and models. Operating experience forces those models to survive contact with real customers, commercial targets and organisational constraints. The useful question is always the same: what does this understanding change in the product, the model, the price, the experience or the decision we make next?