The Harrod-Domar growth model emphasizes technological progress as the primary driver of long-term economic growth, whereas the Solow model focuses solely on savings rates.

The reverse is true. The Harrod-Domar model posits that economic growth depends heavily on the national savings rate and the capital-output ratio, assuming fixed technology. The Solow-Swan model introduced exogenous technological progress as the critical factor for sustaining long-term per capita growth beyond mere capital accumulation.