Complex systems, part I: why 42 is rarely, if ever, the ultimate answer.

Area of Science:

• Systems science and complexity theory
• Medical epistemology
• Clinical practice analysis

Background:

• Clinical interactions are often characterized as complex and complicated systems, termed "wicked systems".
• Traditional quantitative analysis and reductionist metrics, heavily influenced by randomized controlled trials, may not adequately capture the nuances of clinical practice, particularly in surgery.
• A historical reliance on systematic data correlation in medicine is contrasted with the current bias towards specific evidence bases.

Purpose of the Study:

• To differentiate between various systems and systems thinking categories.
• To illustrate the inherent complexity of clinical interactions as "wicked systems".
• To critique the limitations of reductionist metrics and quantitative fallacy in medicine, advocating for a shift towards complex-systems thinking.

Main Methods:

• Conceptual analysis of systems and complex systems theory.
• Illustrative comparisons and examples to demonstrate the shortcomings of reductionist metrics.
• Case examples from oral and maxillofacial surgery to contextualize the arguments.

Main Results:

• Clinical interactions are predominantly "wicked systems" that resist straightforward quantitative analysis.
• Reductionist metrics, driven by an overemphasis on randomized controlled trials, create a biased and incomplete view of medical practice.
• The "tyranny of metrics" hinders a holistic understanding and effective practice, especially in surgical disciplines.

Conclusions:

• A paradigm shift from reductionist thinking to complex-systems thinking is necessary for medical advancement.
• Interdisciplinary collaboration is essential to overcome the limitations imposed by current metric-driven approaches.
• Adopting complex-systems thinking will provide a more comprehensive understanding and improve patient care, particularly in surgery.