A common example of Vulnerability can be see in automobile engine. If the channel from the battery to the engine is disconnected, then the car will not start. In fact here are many channels in a car that if disconnected, will cause it not to start. This makes the automobile a very vulnerable system.
#64. If educational system hierarchical order increases, then vulnerability increases and flexibility decreases.
#179. If educational system size increases and complexity growth is constant, then vulnerability increases.