By Joseph Varon at Brownstone dot org.

Medicine is fundamentally oriented toward healing. Physicians have cured diseases, alleviated pain, extended life expectancy, and expanded collective self-understanding beyond what was conceivable a century ago. Few professions have contributed more to human well-being. However, medicine also confers significant power. Physicians influence individual behavior, shape public policy, direct scientific research, and, particularly during crises, wield considerable authority within society. This power can be beneficial, yet it also risks transforming confidence into unwarranted certainty and rendering authority resistant to challenge.

Power itself is not inherently dangerous; the greater risk lies in excessive certainty.

The most significant ethical failures in medicine rarely stem from malicious intent. More commonly, they arise from overconfidence, hasty decision-making, and the belief that challenging circumstances necessitate drastic measures. The transition from beneficence to harm is seldom abrupt; it typically unfolds gradually, propelled by good intentions and increasing confidence in one's own judgment. Numerous troubling episodes in medical history were initiated by individuals who sincerely believed they were acting appropriately.

The authority of medicine is grounded in general trust. Patients disclose their most profound concerns to physicians, trusting that truth, compassion, and respect will be prioritized. Society grants physicians special privileges, with the expectation that their expertise will be exercised judiciously and with humility. Perfection is not expected; rather, honesty, acknowledgment of uncertainty, and a commitment to continual reassessment are essential. These responsibilities are foundational to contemporary medical ethics and research regulations.¹⁻⁵ Yet, uncertainty is uncomfortable.

Uncertainty is broadly uncomfortable for patients, governments, the public, and physicians alike. During crises, this discomfort intensifies. Emergencies such as pandemics or wars generate a collective demand for definitive answers, even in the absence of sufficient information. Leaders may feel compelled to project confidence, while experts experience pressure to alleviate public anxiety. The inherent uncertainty of scientific inquiry can, under these conditions, become particularly difficult to tolerate.

In these situations, medicine faces a big risk: mistaking confidence for real knowledge.

Scientific progress is driven not by consensus, but by the continual questioning of established ideas, the challenging of prevailing norms, and the willingness to adapt in response to new evidence. Experienced physicians have witnessed the abandonment of once-celebrated treatments. Medical paradigms have shifted repeatedly; interventions once embraced have been discarded, and regulations once considered immutable have been revised. These changes do not signify failure; rather, they demonstrate the ongoing vitality of scientific inquiry.⁶⁻⁸

Science moves forward because of doubt, not because everyone agrees.

Throughout medical history, episodes abound in which certainty yielded to humility. Bloodletting persisted for centuries under the mistaken belief that its rationale was sound. Frontal lobotomy, initially regarded as a breakthrough and recognized with a Nobel Prize, was later discredited due to its harmful consequences. Hormone therapy for postmenopausal women was widely adopted until large-scale studies raised concerns about its safety and efficacy. Certain antiarrhythmic drugs, intended to prevent sudden cardiac death, were subsequently found to increase risk in some populations. Numerous critical care practices once deemed reasonable have since been revised or abandoned.

These stories do not mean science is incompetent. Instead, they remind us to stay humble. They show that our knowledge can change, and we should remember that we might not see the whole picture. Being willing to q...