I'm most certainly not interested in the endless debate of why Muslims didn't draw angels for example, but this conversation got me interested in learning more about our history as humans. For this, and after bit of googling, I ended up liking the work of Rita Louise author of The E.T. Chronicles: What Myths and Legends Tell Us About Human Origins but as such history is better visualized, I looked her up on YouTube and found the following interesting lecture on how ancient technology proves advanced ancient civilization.
Ancient Technology That Proves An Advanced Civilization Was On Earth
Organized into a chronology that starts with “in the beginning” and ends with the advent of civilization, it brings together myths from many cultures (including the Sumerians, the Greek, the Maya and the Aborigines of Australia) and explores them in the context of current scientific discoveries. The result is a mind-blowing re-visioning of human origins through a close reading of ancient texts.
Rather than simply visiting our planet at the dawn of Sumerian civilization as some researchers believe, the ET intervention occurred 3.8 billion years ago when they helped to terraform the planet. Physical descriptions of these entities as well as their alleged origins suggest that there were at least four different races of ETs visiting Earth and interacting with both humans and each other during ancient times.
Later I stumbled upon Erich von Däniken's lecture on Puzzling Ancient History Discoveries Show Impossible Truth For Mankind, which after watching it carefully, I ended up with the conclusion that I already had the question mark, but now I do have many questions marks to explore their possible answers.