How did Aristarchus of Samothrace help establish reliable Homeric texts?

Aristarchus of Samothrace, a prominent 2nd-century BCE scholar and librarian at the Library of Alexandria, played a pivotal role in the critical stabilization of the Homeric epics. Building upon the earlier work of predecessors like Zenodotus of Ephesus and Aristophanes of Byzantium, Aristarchus produced two formal editions of the text of Homer.123

His contribution went beyond mere editing; he authored extensive commentaries and critical brochures that addressed complex Homeric problems, applying rigorous philological standards to the poems. By analyzing structure, language, and style, he was able to make informed judgments about the authenticity of specific passages. For instance, he identified portions of the Odyssey that he believed were later additions, proposing that the poem originally concluded at line 296 of the 23rd book. His work helped refine the text following centuries of potential distortion, establishing a scholarly foundation that influenced the preservation and accuracy of the epics for generations.123