 If (4) is correct, it looks as if, though our structural concepts are well grounded in reality, structures are not part of the basic furniture of the world. This is, in fact, the same issue as whether Kim’s exclusion principle applies to the special sciences: that is, if physics gives a sufficient causal account of the location of all matter, are the other sciences merely heuristics, but strictly epiphenomenal? (see Kim 2005 and Robinson 2014). Perhaps the status of form and structure cannot be solved in a modern context without solving the exclusion issue. 