Chomsky's work represented both an evolution from prior theories but also sparked a revolution in linguistics. While influenced by thinkers like Saussure and others, Chomsky introduced several novel concepts that shifted the field, including defining language as a rule-governed system, focusing on syntax over phonology, and proposing that aspects of language are innate rather than learned. His theories, while built upon previous work, came to define modern linguistics and sparked significant debate over the nature of language.