From a technical point of view, this analysis can also provide precious indications on how to coarse-grain further the system while preserving the correct hierarchical adjacency between the states. For example, such analysis indicates that the most rigorous way to coarse-grain the fiber model without completely losing the defects dynamics would be to do it in such a way that cyan and olive micro-clusters are merged and appear in the coarser model as a single (purple) macro-cluster.