Unbalanced Growth Theory by Albert O. Hirschman explores how targeted investments in specific economic sectors can spur broader development through backward and forward linkages between industries. It argues that a "big push" of coordinated investments across multiple sectors is needed to initiate self-sustaining growth. While some sectors grow faster than others initially creating unbalanced development, this dynamic approach ultimately acknowledges the complexity of economic growth. The theory challenges ideas of uniform development and remains influential for its recognition of intersectoral interdependencies.