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A question, an evidence trail
The Wombat Cube Factory
How do wombats make cubes?
AI-generated illustration · not anatomical evidence
01 · Puzzle
How do wombats make cubes?
What could give these shapes their corners?
02 · Observation
The shapes are already inside
Cube-like shapes were found inside the distal colon of the studied bare-nosed wombats.
03 · Proposed mechanism
Uneven stiffness, forming corners
In a simplified two-dimensional model, contractions with alternating stiffness regions produced square-like cross sections.
04 · Still uncertain
The full explanation stays open
The model does not reproduce full biology. A drying study explored pellet length, but did not establish drying-induced cracking as the explanation.
Original explanatory design · See linked claim cards and papers · Sources checked 2026-09-17
1. 10.1039/d0sm01230k 2. 10.1039/d2sm00359g · 2026-09-17 · Data Source Atlas
Text version & evidence
How do wombats make cubes?
What could give these shapes their corners?
The shapes are already inside
Cube-like shapes were found inside the distal colon of the studied bare-nosed wombats.
Evidence: inside ↗Uneven stiffness, forming corners
In a simplified two-dimensional model, contractions with alternating stiffness regions produced square-like cross sections.
Evidence: model ↗The full explanation stays open
The model does not reproduce full biology. A drying study explored pellet length, but did not establish drying-induced cracking as the explanation.
Evidence: limits ↗ Evidence: drying ↗ Evidence: unresolved ↗Original explanatory design · See linked claim cards and papers · Sources checked 2026-09-17
Keep the trail back to the source.