The universe is chaotic, it is that we find a order in micro scale as we are in. More like that of an minuscule order in Chaos Theory.
Apparently, the value of G (gravity) is not constant, it is dependent on the mass of the entities involved.
And the evolution has always been random, as the mutation being a decisive factor in evolution being random. The asteroid that caused the extinction of Dinosaurs had 15% chance of colliding with earth, and it's path was altered by other asteroids, leading to the impact. And if there were delicate balance in biosphere, there would have been a feedback mechanism to control change in ambient climate and atmospheric attributes, thousands of species wouldn't go extinct everyday if there was balance. It's just humans being an intelligent species capable of altering their ambient sorroundings to survive.
The blood flow to the appearance of consciousness had all been a collective evolution of billions of years. And psychology and biology is not a topic i'm well versed in. But we do deal with atoms and nanoscale particles day in and day out, and the term by which you mean it as empty is not like that. I can show you STM images of rows silicon atoms, and leave it for your judgement.
Judging by the same parameter, the mass of the earth can fit into a football. Even then, the fact of 99.9% being a fact as the atoms of a nucleus can be at a higher energy level. And FYI, the atomic orbital model is defunct, electron cloud model is in fashion.