Talk:Remnant/@comment-26900371-20180410213254/@comment-35697566-20180526204632

My expectation is that Remnant isn't a complete planet.

Primarily, we have it's name. We also have the crude map of Vale that is seen occasionally in Roman's scenes in Volume 1, and the dimensions and shape of the city's coastal borders appear to match fairly closely with the peninsula near the island of Patch that can be seen in the Remant world map. There's also the consideration that the world map of Remnant is fairly detailed in its coastal precision. If you look at a map of the world, even the roughest coasts of the world (Nordic countries, or western BC) are fairly "smooth" just due to the sheer scale.

So either Vale is an absolutely enormous city spanning hundreds if not thousands of kilometers, or landmasses of Remnant are tiny compared to that of earth. I'm not likely to believe Vale is that large, the districts wouldn't be so homogenous and we get a sense of the scale and distance in some shots from Beacon that look toward the city.

The most obvious (meta-level) explanation is that the worldbuilders just fell into the same trap that most fantasy worldbuilders do: a fault of scale, and not appreciating the sheer size of the earth. In-universe, perhaps only a small portion of the planet remains, possibly primarily destroyed by the same cataclysm that cracked the moon (or rather the state of the moon is a result of that cataclysm). Ostensibly, if they attempted "orbital" telecommunication but learned dust doesn't work outside the planet, in-universe they know the true state of the planet (including any additional landmasses), and we just haven't seen it yet. Of course, "Remnant" might just mean that this is all the land that remains, instead of only a remnant of a previously whole planet.

TL;DR Remnant is probably tiny.