One element is never enough, the right combination of elements is needed. With permeability, you need open spaces, infiltration, porosity and redundancy. For instance, the skin of African elephants is permeable with its adaptability to different climates, textures and its diversity of shapes.
Permeability can be applied to how you structure a movement as a way to more easily infiltrate or communicate with your neighbours and community by understanding architecture and behaviour differently. For instance, Tate Neighbours and cultural community-based workshops are strong initiatives to connect with the local community in a consistent and efficient way.