At the beginning of the human species, that is where it diverted (in the ways that it diverted) from other species to develop what we see today as the understanding of existence, conscious thought, and so on, humans were not much different than the rest of the world's animal species. But as time passed a mental (and also the more clearly documented physical) evolution took place starting somewhere between 4 and 6.5 million years ago give or take a few hundred millenniums. At this point, human thought, like other mammalian thought still seen today, was primarily focused on survival, instruction of the young by example, and basic systems of communication which were mostly non-auditory -- relying mostly on gesture and emotional bursts. As the human species continues to evolve, it, as a select few species do (all mammalian or birds and mostly primate), begins to use simple tools to dig in the earth or a bit later use as weapons. This is similar to the way chimpanze...