He’s pointing out that the phonetic maps are so loose and nondeterministic that Virgil’s Aeneid’s first line

“Of arms and a man of Troy i sing who first from shores”

Turns into absolutely unrelated gibberish when applying the deciphering phonetic maps, and comparing the meanings.

* nerd alert: I wrote the English with the word order in Latin, which has a endings-based freedom to word order allowing planned beats, in this case dactylic hexameter…Latin rap sort of when i think of it