What does syme say is his chief job with the new edition?

In George Orwell's "1984," Syme explains that his chief job with the new edition of the Newspeak dictionary is to refine the language by eliminating Words and simplifying meanings. He believes that by reducing the complexity of language, the Party can control thought and limit the range of ideas that individuals can express. Syme's work is crucial to the Party's goal of making rebellious thoughts literally unthinkable through linguistic simplification.