Also intriguing is the current experiment in European (more Dutch) traffic planning - removing all the signs, markings, etc as a way to reduce accidents. In a sense, this 'simplicity' seems to cause everyone participating in traffic to pay more attention to what is going on around them, and react appropriately to other people and vehicles - obviously, something not really imaginable in the America I visited last summer.

Complexity is one answer to a problem, but it is rarely the only one. That complexity tends to have a lot of support from those involved in creating/maintaining that complexity is another question. Including the idea, certainly not espoused by all people who believe in complexity leading to collapse, that complexity is equal to 'progress,' and thus automatically good.