Just like all the other bits of tissue organize themselves.....let's see apes develop exactly the same way, as do cows, pigs, chickens etc. The only difference is that humans developed much more aggressively and somewhat more cruelly than the more slower developing species of this earth. If you do not think cats, dogs or pigs are sentient (self aware) and cannot reason, you have not observed them very well. Humanity has actually enslaved others species. Who knows how those other species might have developed left to themselves.
To justify what they have done, in my opinion, they invented a cruel vengeful God. An unseen, unheard from entity, which supposedly made us king of the hill!!. I concede we may be more than what exists in the physical, but I dare you to prove every other species is not on the same path as we are. I believe they chose a more passive route and will probably arrive at the finish line long before most of humanity does.
Maybe humanity chose this route thinking they could skip a lot of the lessons but boy has this ever failed. What other species has done as much harm to the environment, to every other known species and has even tried to eliminate much of it's own species??
