I write about ancient times, and the pattern of humans was very consistant, everything they did could be done now, by just about anyone. 15,500 years ago comes a wave of things that could not be done now.
In the city of Veracocha, god king of Teahuanaco, stones were quaried, cut with perfect surface, angles, grooves, then moved sixteen kilometers over water, land, to the building site. The largest weighs 440 tons. Baalbek has a foundation of even larger stones.
The stones of Stonehenge were quarried forty miles away, moved over two rivers, and weigh enough that they would crush wood rollers, or just sink in to the earth. Setting them upright, then placeing the capstones, was quite a job, and nothing like it since. The Long Barrows, the triliths, the Cylopean buildings, all moved and placed huge stones, with tight joints, that were never done again.
It is also the time when flying machines start showing up. It was not continued in the art of later periods.
In paintings from the 1500s, in the background, are the great daylight comets, something we have never seen in modern times, and also, classic saucers, the typical UFO, as they recorded things seen.
Humans had long gotten along in survival mode, then comes a sudden change when technlogy appears, and high fire pottery, metals, building cities, irrigated farmland, come in an instant.
I think there are aliens, that come here, and they do not support any political party, but do try to develop the species.
While gifts from the gods are recorded from very early times all over earth, some later people claimed to own one, that they could control with spells, chants, and magic books, but they never produced the technology to back up the claim.