Irational fear of hell still naggs me from time to time

[snowtracks]

Negative infinity to recently, then suddenly a brain assemblies itself without thought, hardly.

Brains evolved from simpler systems just like every other complex organ.

From fossil records, scientists can infer that the first brain structure appeared in worms over 500 million years ago. The functions of the hindbrain found in the fossil records included breathing, heart beat regulation, balance, basic motor movements and foraging skills. A trend in brain evolution according to a study done with mice, chickens, monkeys and apes concluded that more evolved species tend to preserve the structures responsible for basic behaviors. What this means is that evolution is the process of acquiring more and more sophisticated structures, not simply the addition of different structures over a long period of time.[2] A long term study comparing the human brain to the primitive brain found that the modern human brain contains the primitive hindbrain region – what most neuroscientists call the protoreptilian brain. The purpose of this part of the brain is to sustain fundamental homeostatic functions. The pons and medulla are major structures found there. A new region of the brain developed about 250 million years after the appearance of the hindbrain. This region is known as the paleomammalian brain, the major parts of which are the hippocampi and amygdalas, often referred to as the limbic system. The limbic system deals with more complex functions including emotional, sexual and fighting behaviors.

https://en.wikipedia.org/wiki/Evolution_of_the_brain

You appear to glory in your ignorance.

Why is that?

All brains are complex, that's the point. Spare everyone from cut and paste.