Seems like any highly complex system can have elements that are chaotic- in the sense that they are very subject to small changes that can lead to a threshold. You may be moving a number of levers and all is going well. Then you make a change or fail to adapt to a change that in the past was not of consequence - but now it is. Only in this case you quickly find yourself at a threshold you did not expect and no amount of effort can keep you from it. If you had full understood the situation you could have easily prevented the unraveling but you did not have compete knowledge due to the complexity.