This paper claims that complexity consists in a process by which the world and the universe can be indetermined. Now, thinking about indeterminism consists, in other words, in reenchanting the world, a core idea in the center of complexity theory. Consequently, a brief state-of-the-art about indeterminism is sketched out, while point out that indeterminism is an extremely rare position both in science and philosophy. This paper explores the dimensions and reach of indeterminism, and highlights two, namely indetermination as ecology, and indetermination as the absence of time. The outcome is a counterintuitive picture of the world and the universe that allows understanding exactly what the complexity of life and nature consist of.