All human behaviour makes sense in context. The person who snaps at you in a meeting is not simply rude: something is driving that response. The person who withdraws in conflict is not simply weak: something is driving that too. The person who keeps making the same mistake is not simply foolish: there is a driver. Understanding people means being curious about the driver, not just reacting to the behaviour. Psychologists have long documented that most human behaviour is driven by a small set of fundamental needs: security, belonging, significance, autonomy, growth, and the need to be heard and understood. When those needs are being met, people function well. When they are threatened or unmet, behaviour often becomes defensive, reactive, or self-protective in ways that can look irrational from the outside. This does not mean that all behaviour is excusable. It means that understanding the driver gives you a much better chance of influencing the situation productively. If someone is defensive because they feel their significance is being threatened, attacking the defensiveness makes things worse. Addressing the underlying need, even indirectly, gives them room to relax into something more constructive. Behaviour is the symptom. The need is the thing worth attending to.