Pre Cambrian and beginning Cambrian was life in the oceans Oxygen and minerals allowed development then vision constructed a feed back arrangement, I eat you and you eat me, this is fitness consciousness, neurons don't reflect consciousness via and by perception, they create it, everything in existential reality goes back to how it started not who started it.
The fundamental questions have always been why and how, most thinkers accept how everything develops is completely understood and beyond rebuttal.
However the fundamental questions will always be misunderstood allowing their consequences namely opportunity and purpose to be always randomly defined.
Cambrian period was 530 million years ago land animals, (flora and fauna) exited the oceans 430 mya.
Innovation in DNA chemistry is down to adnormal particularly within which fits the fitness matrix, outcome is winner and loser.
Where in the former gets stronger and the latter gets weaker, all animals are a variation of 35 body plans, basic designs, the basic morphology of life's themes only 35 of them everything is the same morphological content.
Stoics believe that reason is the key to social cognition which follows natural methodologies, beginning is always a seismic singularity governed by an idea.
While idea began as a paradox ignited by "recognition" when the instigator of recognition "telepathy " prevailed as the medium between the two opposites.
Thereby causing environment, initially the axiom of the first construction within environment was God, who keeps an eye on things, not by knowing everything as most people suspect, instead God is happy to receive His just deserts provided by winners who also receive their just deserts by His approval or disapproval, winning isn't everything but it helps, Fate is the real boss.
Here's hoping I'm OK and you too, unless you happen to be nasty.