@Alicorns
Millennial Dan wrote:
I’ll even mention Granny Smith. There’s a good chance she, a mere earth pony, is hundreds of years old. If even the least magical type of pony is able to live that long, why not alicorns for thousands of years?
There's a good chance she just inserted herself into an old family legend, you know.
But regardless of that, I take issue with the assertion that earth ponies are less magical. They aren't, their brand of mystic power just manifests in subtler ways, so it's harder to notice. The most visible is their ability in agriculture, but they also seem to posses far greater physical fortitude than either of the other ponies. They're also much more adaptable, since they work in a wide variety of professions, while pegasi and unicorns gravitate towards a small set of specialist roles.
So, if any ponies have the benefit of a long lifespan, I'd say it's the earth ponies. After all, good old-fashioned physical health is much more reliable than some mystic's mumbo-jumbo when it comes to combating the wear and tear of time.
Millennial Dan wrote:
We know that magical prowess is enhanced by study, as we’ve seen Twilight grow more and more adept with her powers as the series has progressed.
That might not necessarily be the case. Remember the name of the show? Her power may have increased due to the deepening of her friendships. Of course, raw power is useless if you can't channel it properly, so study is still an important factor.
Millennial Dan wrote:
We know that the changing of day to night and back can be (and was) done by ordinary unicorns, but we don’t know how many. Two? Five? Ten? No idea, but it’s doubtful that it required the entire race.
Well, I'm not so sure of that. This is, after all, one of the least well-explained parts of Equestrian lore and comes from a somewhat dubious source (adaptations based on historical facts often twist them so that they make for a better story or to be more politically correct). It could well be that the unicorns lied about their ability to control celestial objects in order to gain political leverage, and used mass illusion spells to cause a fake eclipse or the like whenever doubt was cast on them.
Alternatively, the unicorns didn't directly control the heavens; instead they called out to the divine spirits that did. What divine spirits, you ask? Celestia and Luna, of course.
Here's a little theory to make the above theory work:
Alicorns are only born in very specific circumstances, when an immaterial spirit wants to become manifest, which is usually when it wants to step in and assume leadership of a group of mortals. However, since a being made essentially from pure magic is vastly different to mortal beings, they'd have a very difficult time associating with and understanding their subjects.
So, they need a host body that understands the needs and desires of mortals. Of course, said body also needs to stand out. So, they arrange for a pony to be born an alicorn and merge with them. They allow the alicorn to develop a mortal's personality, but always sit in the back of their mind, subtly manipulating them towards their desired goals.
So Celestia and Luna are the spirits of sun and moon made manifest. Presumably the ponies ran into some difficulty deciding who should be the leader of this newfound nation of Equestria, so the twin spirits decided to step in and solve the problem, rather than let the ponies lapse back into tribal barbarism.
There's some further support for this theory, based on the info we have of season 3:
Cadence seems to have appeared at an awfully convenient time, no? An empire stuck in time warp suddenly appears and she's appointed leader by virtue of being the only available alicorn around. I very much doubt that's all random chance.