Rethinking Legacy Thinking

The phrase legacy thinking carries two very different meanings. One is forward-looking and generational, the other is focused on past performances and traditions.

Legacy thinking is often described as a way of thinking about the future, especially when it involves leaving something behind for the next generation. In this sense, it is forward-looking. A physician may hope to pass along to trainees a respect for professional traditions, a sense of responsibility, and habits of disciplined work. They may also wish to transmit a commitment to treating patients with compassion, colleagues with respect, and an approach to scientific inquiry grounded in curiosity and evidence before action.

Understood this way, legacy thinking treats time as a continuum in which one generation consciously prepares the ground for the next. Mentors thus pay close attention to how their actions might shape their students’ values and behaviors. Teachers hope their students will emulate not only what they know, but also how they think. Strong institutions might strive to foster environments in which individuals may prosper financially, emotionally, and intellectually. Families strive to cultivate relationships grounded in love, generosity, and trust.

Yet the same phrase can mean something quite different. Legacy thinking can also refer to the habit of staying anchored to the past. In this sense, it means hoping or presuming that habits and ideas that once worked will continue to work indefinitely. Traditions are abandoned with difficulty. Individuals resist change or construct obstacles that prevent it altogether. Entrepreneur Salim Ismail describes this as an “immune system” problem: when disruptive ideas enter established systems, the system reacts defensively in order to neutralize the threat and restore familiar patterns. It happens in research, business, and interpersonal relationships.

Individuals behave the same way. Even forward-looking thinkers might hold on to old ideas. Those once known for their creativity can become entrenched in outdated assumptions and behaviors. Instead of building for the future, they focus on preserving the present. With their credibility and power gained from decades of work, they may find themselves still influencing others and defending territory— intellectual, behavioral, or emotional—even when the surrounding world has already changed.

I’ve been thinking a great deal about change recently. Perhaps it is because I am growing older. Or perhaps it is because technological innovation is transforming daily life at an extraordinary pace. Influencers shape cultural preferences. Podcasts expand educational opportunities almost exponentially. Digital assistants help complete mundane tasks with remarkable efficiency.

Each new generation faces the challenge of deciding what should be preserved, what should be discarded, and what warrants adaptation. These decisions often create tension between those who are embedded in the past and those who advocate change. Early adopters sometimes embrace innovation at considerable personal or professional risk, while others remain anchored to familiar habits and safer havens. Those who resist change for too long may eventually find themselves sidelined, increasingly irrelevant, and at worst obsolete, although many may persist for years due to their established authority and institutional influence.

At certain moments in history, however, disruption occurs so rapidly that gradual adjustments become impossible. Clayton Christensen described this phenomenon in The Innovator’s Dilemma, where disruptive innovation upends established practices and assumptions in some of the world’s best-known companies. We are living through such a moment now. Artificial intelligence is rapidly reshaping how we learn, work, think, communicate, and create.

In my experience as a physician, teacher, and writer, healthy legacy thinking transmits principles rather than habits. Principles endure even as methodologies, tools, and techniques evolve. This belief shaped the founding of Bronchoscopy International thirty years ago, built on the principle of democratizing knowledge and the ethics-grounded conviction that patients should not bear the burden of procedure-related training.

As I look back on five decades of work as a physician and teacher, I realize that very few of the techniques I learned early in my career remain unaltered. Tools change, technologies advance, and new knowledge replaces old. What endures is a deep commitment to serving others and a life grounded in curiosity, humility, and responsibility. If anything I have tried to build continues to matter in the years ahead, I hope it will be because a few seeds were carried forward by others who choose to cultivate those same principles.

· Clay Christensen. The innovator’s dilemma: When new technologies cause great firms to fail. Harvard Business Review Press, 2013.
· Colbert Cannon. Salim Ismail. https://www.hpspartners.com/insights-and-news/s10ep96-salim-ismail. April 10, 2024.
· Bronchoscopy International. https://bronchoscopy.org