The most important lesson is that extractive institutions cannot generate sustained technological change for two reasons: the lack of economic incentives and resistance by the elites. In addition, once all the very inefficiently used resources had been reallocated to industry, there were few economic gains to be had by fiat. Then the Soviet system hit a roadblock, with lack of innovation and poor economic incentives preventing any further progress. The only area in which the Soviets did manage to sustain some innovation was through enormous efforts in military and aerospace technology. As a result they managed to put the first dog, Leika, and the first man, Yuri Gagarin, in space. They also left the world the AK-47 as one of their legacies.