Frazer framed his comparative material inside a larger claim about human intellectual history: that societies pass through three successive stages of thought, magic first, then religion, then science, each superseding the one before as a more adequate account of causation. That three-stage scheme, and the confident cross-cultural parallels Frazer drew to support it, are now regarded by anthropologists as characteristic of a Victorian armchair method that generalized too quickly from secondhand reports and fit disparate customs into a single evolutionary story that field research has not borne out. Frazer himself never conducted fieldwork; the book was compiled entirely from published travelers' accounts, missionary reports and earlier ethnographies, a method that drew increasing criticism as anthropology professionalized around direct observation in the twentieth century.
Its influence outran its scholarly reputation. First published in two volumes in 1890, it grew through successive editions to twelve volumes by 1915, and a one-volume abridgment issued in 1922 reached a far wider readership than the full scholarly edition ever had. T. S. Eliot cited it directly as a source for The Waste Land, and its central image of the dying and reviving god shaped how a generation of writers, folklorists and early comparative religion scholars framed myth, well beyond the anthropological circles that had grown skeptical of its method.
The book remains readable today less as reliable ethnography than as a document of how comparative religion was once practiced, and as the origin point of vocabulary, sympathetic magic, the dying god, still in wide use.