Fischer eventually discovered a correlation between the linguistic variants and independent social variables such as class and sex. By gathering variable data and analyzing it, he proved that the inconsistencies were indeed manageable, resisting the axiom of categoricity's premise that the data be abstracted from social contexts in order to make it coherent and manageable. By invalidating this premise, it proved that acceptance of the Axiom of categoricity is not a requirement but rather an idealistic option that may or may not be useful to a study. Fischer's work created the basis for sociolinguistic analysis in the coming years, notably William Labov's studies in Martha's Vineyard and New York City during the 1960s.