Tree branches at the angle which makes sap-flow energy consumption a minimum, producing levels of scale as a consequence of the minimum-energy principle.

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• Acting to optimize value and perception are two aspects of exactly the same principle: minimization of free energy.claim0.766
  Foundational claim unifying action and perception within single optimization framework.
• Local symmetries are pervasive in nature (sun, trees, crystals, bodies) and are associated with minimum energy and least-action principles.claim0.750
• Good shape arises in many natural systems such as leaves, bones, and Chladni patterns, where a strong center is intensified by minor centers.claim0.746
• If the field of centers is a governing structure of reality, then there is more objective value in a birch tree than in empty space.hypothesis0.746
• Simplicity and inner calm follows minimum energy principles, giving rise to efficient forms like leaf shapes and boiling fluid surfaces.claim0.744
• acting to optimize value and perception are two aspects of exactly the same principle; namely the minimisation of a quantity [free energy] that bounds the probability of sensory input, given a particular agent or phenotype.quote0.736
  Concise statement of the free-energy principle's unification of action and perception.
• The tree structure can be reconstructed from its versus relation.claim0.735
  Statement that the versus relation uniquely determines a tree.
• "A system can minimize free-energy by changing its configuration to change the way it samples the environment, or to change its expectations. These changes correspond to action and perception respectively."concept0.735
  Load-bearing definition of how action and perception implement free energy minimization.