Complicated vs. Complex
A complex system has simple basic rules that in interaction create highly unpredictable outcomes: ecosystems like forests, our economic market... Complicated systems have a lot of rules in order to make everything perfectly predictable: our bureaucracies, our law-giving. Currently we try to manage the natural complex systems with complicated systems. That this does not work has become most apparent in law-giving, where we are on the road to creating a single law for every single possibility that society might present. Since these possibilities are infinite, we now need lawyers and judges that spend days and months reading through different laws, while normal people are completely disinterested in the rules that they choose to govern themselves by.