 The notion of the \(e\)-development of hypothesis \(h\) can be given an entirely general and precise definition, but we’ll not need this level of detail here. Suffice it to say that the \(e\)-development of a universally quantified material conditional \(\forall x(Fx \rightarrow Gx)\) is just as expected, that is: \(Fa \rightarrow Ga\) in case \(I(e) = \{a\}\); \((Fa \rightarrow Ga) \wedge (Fb \rightarrow Gb)\) in case \(I(e) = \{a,b\}\), and so on. Following Hempel, we will take universally quantified material conditionals as canonical logical representations of relevant hypotheses. So, for instance, we will count a statement of the form \(\forall x(Fx \rightarrow Gx)\) as an adequate rendition of, say, “all pieces of copper conduct electricity”.