The Harrod-Domar model, originally designed to show the instability of a growing economy, was simplified by mainstream economists into a supply-side growth model. This simplified model was later replaced by Solow's neoclassical growth model, which ignored the demand side of the economy. The transition from the Harrod-Domar model to the Solow model resulted in a logically inconsistent framework for analyzing economic growth. Additionally, endogenous growth models, which explain technological change as profit-driven creative destruction, are not logically compatible with the Solow model.