Ryu employed a very helpful method for determining a key motif in Philo's writings. He examined the data of the Allegorical Commentary and the Exposition of the Law separately. This was extremely valuable in noting the similarities and differences between the two epistemological emphases in the different series.
However, I felt like the analysis of the Allgorical Commentary was not substantive enough, considering he only focuses on (1) mystery initiation language and (2) inspiration/ecstasy. I would have loved more engagement of his findings with those of Anderson's monograph on Philo's view of the cosmos and its role in the knowledge of God. I suppose that is what my dissertation will do, in part.