Pillar 4: Negative selection
Also connected to the phenomenos called large poppy syndrome and kakistocraty. The dictatorship destroys the best members of the society or puts them under survelliance to use for the regime's benefit. So, the ruling clique stays the smartest, most powerful kids on the block. However, a rigid clique wouldn't recognise some talents and technologies as "high poppies". That's where changes may grow.
