For the methods citation example, the citation chain (is supposed to) go all the way back to the paper devoted to originally describing the method. In that pape

For the methods citation example, the citation chain (is supposed to) go all the way back to the paper devoted to originally describing the method. In that paper there (is supposed to be) a bunch of checks (compare to other methods, etc) that the method is working as claimed. These checks will not be repeated every time.