The scheme was overtaken by the economic crisis, and the stranglehold of BAA and BA, both of which have a lot invested in Heathrow, has prevented its revival.
In his book, Team of Teams, General Stanley McChrystal describes how the army's hierarchical structure hindered its operations during the early stages of the Iraq war.
Moreover, barras bravas (hooligans), whose penchant for vandalism and violence has discouraged law-abiding fans from attending matches, can be jailed for up to ten years for using explosives.
The high costs of converting to sound and the early limitations of sound technology were among the factors that suppressed innovations or retarded advancement in these other areas.