multiple cropping may not be the best assurance for reducing risk. On the other hand, in some cases, trade can contribute to reduction of risk. yet in some other instances, instead of diversification of risks through multiple cropping, diversification of income sources becomes the alternative. such form of diversification will reduce the complexity of pre-requiste knowledge for multiple cropping which can be costly in terms of learning time. as such, the principle of sufficiency and reasonableness of sufficiency economy can be translated in technical terms of economics as optimization and rationality. the concept of sufficiency economy can be adopted by mainstream economics in all case and all economic sectors without any inconsistency. mainstream economists had their argument that since economics has been developed for much longer time, it is analytical dimensions can be more thorough and can help reduce any mistakes caused by hasty conclusions