IF you happen to get a meme or post in your newsfeed that mentions: mudfloods; history rewritten or reset or erased, and that all the history we are taught are lies; that we are unable to build or sculpt today what was done in the past; that there's no way the great cathedrals could have been built with hammers and chisels out of marble or stones hauled by donkey carts or horses and buggies; fancy towers that got free electricity from the aether; giants built huge steps and carried huge stones... RUN as fast as you can away from the post, the group, or the persons pushing this nonsense!
This is all about "Tartaria," the latest inane conspiracy blather that almost makes the flatearthers look sane and reasonable. Yes, according to them, some Tartar Empire (sort of around eastern Russia and Mongolia) was responsible for all the great constructions of the past around the world, but some great mudflood wiped out the evidence, so history was rewritten to explain these great works that supposedly were beyond the skills, tools, and resources of the peoples who we are now told built them, or even beyond our ability to build them today.
Even works NOW, STILL, under construction, like the Sagrada Familia Cathedral in Barcelona, Spain (which I first saw in 1969, then in 1979, and most recently at the beginning of 2011, just after the roof was enclosed and Pope Benedict consecrated it, so I can attest to it being in various stages of construction, with NEW sections each time I saw it) are claimed to be OLD works that COULDN'T be constructed today, only repairs made. The evidence of photos and films and a historical record from its inception, design, and stages of construction, are irrelevant to these cranks.
I can only assume, as with the flat earth nonsense, this is some psyop to confuse and sow doubts about everything we are told, even the evidence of our own eyes, so that we are primed for even more inane nonsense in the future and we jettison any anchors to reality that might thwart such efforts, such as the need to get past the evidence that there are only TWO sexes/genders, so that "transgenderism" can take hold, which then leads to acceptance of "transhumanism," for example.