In evolutionary psychology, it is usual to refer to evolution as adaptation to increasingly complex environments.

Was there ever a moment when the world was simple or static?

Both, the world for the archea and bacteria, and ours, are comparable in complexity.

So, evolution was not aiming to open the perception channels to complexity.
Or was it?

In math and in physics, in bohemian times, before the mass propagation of what Truesdell has called plebiscience, theory was, ideally, an exercise of generalizing observed phenomenon that would subsume a wide gamut thereof as implications of a smaller number of principles.

These days complexification is more of an approach than a subject.