Egbert, M., (2008) https://lifeandmind.wordpress.com/2008/08/21/the-role-of-the-spatial-boundary-in-autopoiesis/

“Figure 2: The spatial boundary here is more accurately represented as a process that enables other processes (dashed arrows).

The more appropriate way to include the spatial boundary in this diagram is depicted in figure 2. Here, the spatial boundary is more accurately represented as a process (vertex) that enables other processes (all of the dashed arrows).”

via The Role of the Spatial Boundary in Autopoiesis | The Life & Mind Seminar Network

An interesting visual and conceptual model of autopoietic systems where the ‘spacial’ boundary is depicted explicitly as an especially enabling process such that it is most connected (when compared to other ‘enablers’) to other enablers and contingent processes…