Four primitive layers determine form and function of gall organs
During the process of Gall Cultivation, users are guided by 4 questions to design gall organs. Those questions are translated into 4 primitive layers that determine the form and function of each gall organ.
Layer 1: Form primitives
What shape does it grow?
- Sphere / bead
- Disc / Plate
- Cylinder / rod
- Tube / lumen
- Cup / socket
- Dome
- Horn / spike
- Fibre mass / floss
- Felt / pile surface
- Radial strut lattice
- Multi-chamber array
- Coil / Spiral
Layer 2: Material primitives
What is it made of?
- Hardwood
- Porous / foam
- Orient fibres
- Elastic / hygroscopic
- Transparent / translucent
- Brittle / friable
- Waxy
- Papery
Layer 3: Function primitives
What does it do?
| Function | Description |
|---|---|
| 1. Nothing but be a shape | |
| 2. Holds something | water, air, heat, smell |
| 3. Lets something pass, or refuses to | carries liquid/air, absorb water, sealed, filters |
| 4. Concentrate something | fragrance, pigment, tannin, glue or resin, lipid or oil, sugar, nutritions (protein, lipid), medicinal (alkaloids, flavonoids), etc. |
| 5. Gathers something | pulls metal from the ground, pulls something from the air or rain |
| 6. Notices something | sense and react, records, count, compute |
Layer 4: Site primitives
Where does it grow?
- Site of plants: leaf, stem, root, trunk ,etc.
- On a specific location of other galls
(See also: Humans have used galls for various purposes for a long time.)