Constructal Law
Updated 2026-08-05
INTRODUCTION
English translation pending.
CORE DEFINITION
Formulated by Adrian Bejan, the law holds that for a finite system to persist in time it must evolve its configuration so that the currents flowing through it encounter less resistance. The same principle generates branching trees in rivers, vasculature, lightning, and urban road networks. The core claim is that shape is a consequence of flow access rather than an accident. The qualification is that the law describes an evolutionary tendency and does not by itself prescribe a design.
SCAFFOLDING EFFECT
Reduce cognitive load
- Use Flow Mapping: Trace how information, decisions, or materials actually move through your structure. - Use Resistance Reading: Treat every awkward handoff as a place where the configuration resists flow. - Use Shape Redesign: Restructure the layout of the network rather than pushing harder through a poor shape.
Anchor fast decisions
Systems that persist are those whose flows keep moving, and configurations that add resistance lose out over time to those that reduce it. Because the same branching geometry solves the problem of connecting a small source to a large distributed area, similar shapes recur across scales and materials. Structure is therefore shaped by the requirement of flow access, which is why a badly configured network will be reconfigured or replaced.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Adrian_Bejanverified
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