Geometry is a system of spatial and temporal distances between points, and at each of those places, there are local qualities—perfectly natural intrinsic features that don't require anything more substantial than the location of the instantiation. Lewis (1973), page 556.

Figure 6. David Lewis' counterfactuals, which includes his renowned defence of realism about conceivable worlds and his theory of laws of nature, is a compelling presentation of and sustained argument for a certain perspective of statements which express contrary to fact conditionals (Lewis, 1973)

Regularity theorists can take use of HS's preservation of HS, which makes it difficult to give up easily. Simply said, there is nothing more difficult to understand. For instance, Lewis (1973) points out that differences in the organisation of attributes are necessary for there to be difference. All thus depends on that. Everything that people observe in their environment "supervenes on" (i.e., is made up of) attributes. This then has a plan because those attributes are sometimes instantiated. In the HS image, this is reality. Given that HS is a philosophy that explains everything about the world in a particularly elegant and straightforward way, it is difficult to argue that it is not worth defending. Most notably, HS is upheld by NRT (and the RVL) because it rejects the idea that laws imply inevitable relationships between various existences.

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