Determine whether the number of experiential kinds is limited

Determine whether the number of experiential kinds is limited by the kinds of physical substrates that can support consciousness, including whether the Integrated Information Theory formalism permits only certain substrate architectures and consequently only a restricted set of experiential contents.

Background

The paper discusses the possibility that a valid Rosetta Stone could link phenomenal structures to the physical cause-effect structures postulated by Integrated Information Theory (IIT). If only a limited range of physical architectures can constitute conscious substrates, then the corresponding kinds of phenomenal content might also be limited. The authors identify this as an unresolved question and give undirected grids, directed grids, rooted trees, and cliques as candidate architectural classes, while noting that the specific character of some local qualia may remain unknown.