So, to breathe a bit of life back into this thread. One thing I like to think of sometimes is what fantasy worlds would consider mythic and fantastical, especially given the tendency for all of a work’s in-universe myths and legends to turn. out to be true in some capacity. MLP generally seems to use what we would consider pulp and soft science fiction (although, given Daring Do, the fictionality of even that can be called into question) so I like to think that what we would consider trappings of science and realistic fiction is what a fantasy world would consider fantastical.
For example, I like to think that the residents of the MLP world would think of dinosaurs the way we think of dragons.
Suppose, let’s say, that a very early pony culture is beginning to feel out the world beyond its immediate homeland. Traders and explorers come back with stories of the strange things that live in distant lands and, as they must even in a land based on our own myths, things get a bit garbled and confused.
Perhaps early explorers get rocs and dragons – perfectly normal creatures, really – a tad mixed up. Perhaps they give one the characteristics of the other – a dragon with a roc’s beak, or a flightless roc with a dragon’s jaws and tail. The myths catch on, and get embellished over time – perhaps roc heads get swapped out with those of other birds, like parrots or ducks, and perhaps regular
draconic thagomizers serve as inspiration for clubs and whips and even more outlandish natural weapons.
Of course, by the time dragons and rocs enter the growing corpus of scientific knowledge, they’re entirely unlike the now well-established dinosaur myths, and no longer associated beyond a certain point. Most ponies continue to believe that dinosaurs, as separate from your commonplace giant birds and fire-breathing sapient reptiles, exist just beyond the current borders, right over beyond those hills there, surely, same as explorers and historians were always dead certain that dragons and other monsters were commonplace
just beyond the known world’s current edges.
Anyway. The theropods and the four-legged herbivore groups serve as a rough analog for Western and Eastern dragon traditions – nominal connection, but clearly different appearances and attitudes that are nonetheless consistent within each group. The profusions of crests, horns and tail weapons can serve as a parallel to dragons’ breath weapons in our fiction – instead of inventing exotic exhalations for a work’s varieties of dragons you’d make up some ornate or offensive implement to attach to the creature’s face or tail.
Relatedly, I could see robots as a rough analog for golems and other constructs, and science and supertechnology as a parallel for magic in a world where magic is a known quantity and likely a lot less mystified than it is for use.