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Morphological Computation: Nothing but Physical Computation.

Marcin Miłkowski1

  • 1Institute of Philosophy and Sociology of the Polish Academy of Sciences, ul. Nowy Świat 72, 00-330 Warszawa, Poland.

Entropy (Basel, Switzerland)
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Morphological computation is not fundamentally distinct from physical computation. Some cases are not computational, while others are physical systems, requiring broader analysis beyond morphology.

Keywords:
adaptivitycomputational modelingfree-energy principlemorphological computationoffloadingphysical computation

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Area of Science:

  • Cognitive Science
  • Robotics
  • Philosophy of Computation

Background:

  • The concept of morphological computation suggests that an agent's physical form performs computations.
  • This perspective is often contrasted with traditional computational models relying solely on neural or internal processing.

Purpose of the Study:

  • To challenge the distinctiveness of morphological computation compared to other physical computation.
  • To re-evaluate the notion of 'offloading' computation to morphology.
  • To clarify the relationship between an agent's morphology, its environment, and its access to environmental information.

Main Methods:

  • Conceptual analysis of computational systems.
  • Critique of existing theories on morphological computation and 'offloading'.
  • Examination of the role of morphology in representing environmental information.

Main Results:

  • Identified purported cases of morphological computation that are not computational.
  • Demonstrated that valid cases of morphological computation are instances of general physical computation.
  • Argued that 'offloading' to morphology often means avoiding computation rather than performing it.
  • Highlighted that an agent's morphology informs about its environment but is not necessarily accessed as an environmental model.

Conclusions:

  • Morphological computation is not a unique category but a subset of physical computation.
  • The benefits attributed to morphological computation (e.g., efficiency) apply to all physical computational systems.
  • The concept of 'offloading' requires careful redefinition to distinguish between computation avoidance and computational execution.
  • An agent's morphology provides environmental information but does not equate to an internal environmental model.