Our alien creators had no use for a written language. They had no reason to record anything because they have mastered quantum entangled telepathy. All experienced and remembered what one experienced.
Humans were created as a slave race with genetics of the most advanced earth species genetically manipulated to have higher intelligence with no ability to connect to the quantum entangled knowledge of the creators. This was intended to keep the highly functional work force ignorant. Since this human workforce could not have the knowledge and experiences of their fore-bearers, the humans would not progress.
As time passed, the alien creators left here to manage our development, died off. They were not immortal. They lived for centuries, but their population was not large enough to eliminate crossbreeding. For their task was to prepare earth for the next settlement ship. The ship that has not yet arrived.
This crossbreeding created some very malevolent characters that are only recorded in history as a mad God or Pharaoh. Some even mated with humans. Those humans, with an alien ancestor, have brief intervals of being connected to the quantum entangled alien knowledge vault. These glimpses are rarely understood. You have heard about such occurrences with Autists. A expert level hidden skill manifests. Other examples are from humans considered as geniuses. Many of these geniuses admit that they received the information, they didn’t create it.
Examples: Srinivasa Ramanujan, Albert Einstein, Willie Nelson.
Once the alien overlords died off, humans did something unexpected. They created a written language to store the information that previous humans had learned. So, humans were no longer locked in a development cage. The alien creators had no concept of transferring knowledge through scratches in clay. Books. Video..
Such unique ways to transfer knowledge couldn’t even be imagined by a species that shared all experiences, past and present, through a telepathic quantum entangled knowledge vault that they had never been without.