Due to these concerns, lorazepam use is generally only recommended for up to two to four weeks. Lorazepam was initially patented in 1963 and went on sale in the United States in 1977. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system.
David Ricardo, the British economist who invented the theory of comparative advantage in 1817, actually knew about this problem perfectly well, and wrote about it in his book on the subject. So there's no excuse for modern economists to ignore it. Dubious Assumption #6: Short-term efficiency causes long-term growth.
A country is in a position to enjoy comparative advantage in the production of a product when the said product can be produced with a lower expenditure in comparison with other products the country produces. It is argued that even though a nation may have an absolute advantage in the production of both products.n RCA of less than 1 demonstrates that the country has no Revealed Comparative Advantage and is not specialized in the product line (Balassa, 1965; Krugell & Matthee, 2009). RESULTS AND DISCUSSION Ethiopia has 302 product lines which have RCA equal or greater than 1.