By Paul Alexander Wolf

After several decades in medicine, one observation has stayed with me more persistently than any guideline, policy shift or clinical breakthrough. It is not about patients, but about doctors. Some clinicians continue developing throughout their careers. Others, equally competent and conscientious, appear to stop. Their knowledge grows, but something else contracts. Curiosity narrows. Reflection fades. Professional growth slows.

The distinction is subtle. It rarely announces itself. Yet once seen, it becomes difficult to ignore.

I first noticed it as a young doctor, then again during postgraduate training, and later in rural hospitals, community practices and teaching environments. The pattern remained remarkably consistent across countries and systems. Some doctors remain open to being changed by experience. Others become increasingly protected from it.

For years I assumed the difference was primarily about knowledge. I no longer think so. Modern medical education has become highly effective at producing competence. Universities teach it. Colleges assess it. Healthcare systems depend upon it. Competence is essential. But competence may be the beginning of professional development rather than its culmination.

Becoming a doctor involves more than acquiring knowledge and skills. Doctors are shaped by the patients they meet, the responsibilities they carry, the colleagues they work alongside and the environments in which they work. Knowledge remains essential, but the development of a doctor also involves the gradual maturation of judgement, attentiveness and ways of seeing. Much of that development occurs after formal training has ended. The more interesting question is what happens afterwards.

Over time I became less interested in development as the accumulation of knowledge alone. Increasingly, it seemed to involve something broader. Judgement matured. Curiosity deepened or narrowed. Attentiveness expanded or contracted. Doctors appeared to be developing not only what they knew, but how they saw. These changes were subtle and difficult to measure, yet they influenced professional growth as profoundly as knowledge and skill.

What allows some doctors to continue developing long after training has ended? And what protects that development?

As I approached the later stages of my career, another observation emerged. The doctors who continued developing often remained remarkably alive to medicine. They remained interested in patients – in how people lived, suffered and recovered. They remained interested in colleagues, ideas and new ways of understanding familiar problems. Most of all, they remained interested in learning.

The opposite of this was rarely incompetence. More often it was closure. Medicine became increasingly familiar. The patient became a diagnosis. The consultation became a process. The profession became a routine.

Perhaps this is one reason students can be such valuable teachers. Students arrive before medicine becomes routine. They still notice things that experienced clinicians sometimes miss: the hesitation in a patient’s voice, the silence after difficult news, the anxiety behind apparently straightforward symptoms. Years ago, after a student had conducted much of a consultation under my supervision, an elderly patient quietly remarked, “I think she listens better than you do.” The comment was kind. It was also accurate.

Experience improves efficiency. But efficiency and attentiveness do not always travel together. Some of the qualities we value most in experienced clinicians – judgement, presence, discernment, the ability to remain genuinely interested in another human being – rarely appear on performance dashboards, yet they profoundly influence the quality of care we provide. Epstein’s work on mindful practice has long argued that attentiveness and self-awareness are central components of good clinical care rather than optional extras.

Most discussions about maintaining professional standards focus on deficiencies of knowledge. This is understandable. Knowledge gaps can be identified, measured and addressed. Stagnation is more difficult to recognise. It rarely disrupts workflow. The clinician remains busy. Patients continue to be seen. Continuing education requirements are met. Guidelines are updated. From the outside, little appears different. Yet internally something may be changing. Curiosity narrows. Reflection becomes less frequent. Questions are replaced by assumptions. The unfamiliar becomes increasingly interpreted through familiar frameworks.

Perhaps the greatest threat to professional development is not ignorance. Knowledge has never been more accessible. The greater threat may be stagnation.

This question is directed as much at myself as at anyone else. There have been periods in my own career when curiosity came easily and periods when it did not. Times when I listened well and times when I became too efficient. Times when patients surprised me and times when I thought I already knew the story before it had been told. The longer I practise, the less interested I become in dividing doctors into those who develop and those who stagnate. Most of us move between both states.

Every generation of doctors faces its own pressures: administrative burden, emotional burden, the accumulation of responsibility, the fatigue that accompanies years of caring for others. The question is not whether we are vulnerable to stagnation. The question is whether we recognise it when it appears.

This becomes increasingly relevant as medicine enters a period of rapid technological change. Artificial intelligence, decision-support systems and expanding access to information will transform medicine in ways that remain difficult to predict. Many of these developments should be welcomed. But they raise uncomfortable questions. If information becomes easier to access, what becomes the distinguishing characteristic of a mature clinician? If efficiency becomes easier to measure, what protects attentiveness? If diagnostic support becomes increasingly sophisticated, what protects judgement?

Information and judgement are not the same thing. A computer may help identify possibilities. The doctor remains responsible for understanding what those possibilities mean for the person sitting in front of them. The challenge of the future may not be finding information. It may be knowing what to do with it.

Every generation of doctors inherits knowledge. Modern medicine has become remarkably effective at transmitting that knowledge. Yet information alone does not explain professional growth. Knowledge can be transferred. Judgement cannot simply be transferred. Wisdom cannot simply be transferred. Neither can attentiveness, humility or the capacity to remain curious. These qualities develop through experience, reflection, responsibility and repeated encounters with reality.

Looking back across several decades of practice, I have become increasingly convinced that exposure matters. Not exposure to novelty for its own sake, nor hardship as a badge of honour, but exposure to realities beyond our own assumptions. Patients whose lives differ from our own. Communities facing different challenges. People from different generations, cultures and circumstances. Such encounters remind us that there are many ways of living, suffering and understanding the world. Exposure does not automatically produce growth, but growth becomes difficult without it.

Every consultation shapes the doctor as well as the patient. Every workplace shapes the clinicians within it. Every generation shapes the next, whether intentionally or not. This places a quiet responsibility upon all of us: not simply to teach knowledge, not simply to maintain standards, but to help create environments in which professional growth remains possible.

After many years of practice, I find myself returning to the same observation. The doctors who continue growing are often the ones who remain teachable.