Going through David Holmgren's version of the Permaculture Design Principles, here's #8.
Integrate rather than Segregate
Permaculture loves relationships, and that is how I think about this principle. If you segregate then the only relationships are at the boundaries, but if you mix it all together then each element relates to all the others.
Let's compare some grids to full integration: n(n-1)/2 is exponential
|Grid size||Elements||Boundaries in grid||Relationships if integrated|
You get the picture - Sepp Holzer's ground cover seed mix contains 40-50+ species: that's 780-1225 connections!
In our designs:
- Each element performs many functions
- Each function is supported by many elements
Pretty picture of the principle at permacultureprinciples.com