 There are other threats to Mereological Harmony that we will not discuss, e.g., threats to H7 and H8 that arise from ‘moderate views about receptacles’, according to which only topologically open (alternatively: only topologically closed) regions can be exact locations (see Cartwright 1975; Hudson 2005: 47–56; and especially Uzquiano 2006), or threats to H4 discussed in Uzquiano (2011).)