The world in which we live is chaotic or at least tends to be, despite our efforts to understand and organize it.
Complexity is the situation in which multiple causes combine to produce a single consequence.
We often confuse chaos with disorder but scientifically:
Disorder is a situation in which the environment is in a state that does not conform to any known or desired model such as a table on which the books are not well aligned.
Chaos is not in itself a situation without order but instead it is an area in which an event manifests itself in such a sensitive manner to changes in initial conditions, to become completely unpredictable and even difficult to understand.
And where you stand? On the side of Chaos? Or on the side of Disorder?