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la théorie de l'offre selon les classiques ( ricardo , smith ) qui permet au marché de se réguler lui même sans interventionnisme de l'état et la main invisible de l'économie qui permet à l'économie de produire ce que veulent les consommateurs sans la présence de l'état.
A theory can be 'correct' under certain conditions, when applied in the real world and it will be wrong when we don't have that conditions that is why we call it theory, for example The supply theory according to the classics (Ricardo, smith) it was right at that time when the economy is small and that allows the market to regulate itself without interfering of the government but currently with huge economy that required huge projects that cant be financed by privet sector due to long period of payback or huge funds need to finance the project.
fixed coefficient production function
All economic theories are based on some assumption ....to decide which theory is not correct first you need to understand assumptions.
evaluating the efficiency of the labour market using the employment rate or unemployment rate is quite unrealistic as the labour market in all countries specially for the developing countries which is shed the light on other measurements that need to be included to evaluate the labour market in all countries such as working conditions, quality of work and underemployment rate.
i think all theories work well, but in future some theories may crash..
