Prespeech mind lacks reflective awareness (or what is known as consciousness). With speech there came a dark side, an Achilles' heel if you will: while the positive side of acquiring speech was the ability to get hold of, remember and use experience, the negative side was the anxiety and limbic overinvolvement in acquiring the concepts like death, danger, threat, pain, fear, hunger loss and etc.
Since it was anxiety overload that had to be compensated for, it is easy to identify two distinctly mind-created and mind enhanced danger schemata:
- Invisible forces or gods, that is, agencies that lend causal coherence to incomprehensible phenomena.
- Humans, or more precisely alien groups of humans, with their imagined group of intentions as constituting the source of danger.
Simply put: the down side of being equipped with language was an anxiety resulted from the negative emergent concepts that the pre-speech species didn't experience. Gods or concepts as such were created in order to explain the inconsistencies in the scenarios that found meaning through language.
With some adaptations, from The Crucible of Consciousness