The Vedic Sanskrit found in the "Rigveda" is distinctly more archaic than other Vedic texts, and in many respects, the Rigvedic language is notably more similar to those found in the archaic texts of Old Avestan Zoroastrian "Gathas" and Homer's "Iliad" and "Odyssey". According to Stephanie W. Jamison and Joel P. Brereton – Indologists known for their translation of the "Rigveda" – the Vedic Sanskrit literature "clearly inherited" from Indo-Iranian and Indo-European times the social structures such as the role of the poet and the priests, the patronage economy, the phrasal equations, and some of the poetic meters. While there are similarities, state Jamison and Brereton, there are also differences between Vedic Sanskrit, the Old Avestan, and the Mycenaean Greek literature. For example, unlike the Sanskrit similes in the "Rigveda", the Old Avestan "Gathas" lack simile entirely, and it is rare in the later version of the language. The Homerian Greek, like Rigvedic Sanskrit, deploys simile extensively, but they are structurally very different.