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Reductionism in physical sciences

R J Williams1

  • 1Inorganic Chemistry Laboratory, University of Oxford, UK.

Novartis Foundation Symposium
|July 8, 1998
PubMed
Summary

Reductionism successfully explains equilibrium systems using atomic and molecular properties. However, it fails to describe time-dependent, directed processes like biological machines, which require organization around a plan.

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Area of Science:

  • Physical Sciences
  • Chemistry
  • Biology

Background:

  • Reductionism posits that all physicochemical observables derive from fundamental particles and energies.
  • This principle is highly effective for analyzing equilibrium systems and molecular properties.

Purpose of the Study:

  • To evaluate the scope and limitations of reductionism in physical sciences.
  • To identify systems where reductionist approaches are insufficient.

Main Methods:

  • Analysis of equilibrium systems using atomic and molecular descriptions.
  • Examination of dynamic molecular assemblies based on composition, energy, temperature, and pressure.
  • Contrast of reductionist analysis with time-dependent, organized systems.

Main Results:

  • Reductionism accurately describes single molecules (e.g., DNA) and equilibrium states.
  • It accounts for a system's capacity to change and do work under equilibrium conditions.
  • Reductionism inadequately addresses time-dependent phenomena like directed motion and flow.

Conclusions:

  • Reductionism is a powerful framework for equilibrium physical and chemical systems.
  • It falls short in explaining systems exhibiting organization around a plan or cycle, such as biological machines.
  • The limitations highlight the need for alternative frameworks to understand purposeful or directed activity.

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