Maya script
These realizations led to the successful decipherment of many of the texts which had been impenetrable (and almost "dismissed") by Morley and the "old school". In retrospect, these breakthroughs may have been realized earlier had it not been for Morley's, and later Eric Thompson's, almost "on principle" position against the phonetic approach. Consequently, most of Morley's attempts to advance understanding of the Maya script have been superseded.