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« on: January 19, 2010, 03:06:13 AM »
First let me just say that we are all assuming, me included, that the physics of Cosmere are the same as those of our own universe and if they were to differ even slightly a lot, if not everything, that has been said becomes mute. While I'm at it the people of Scadrial, and likely all the worlds Brandon writes, do not have the same biology as us either.
Ok, that being said there is a limit to the speed at which a Feruchemist can travel but, it isn't a limitation of the Feruchemist, it's actually a limitation of their metalminds. That limit, 299 792 457.99999999... meters per second, infinitively close to, but not actually reaching the speed of light. Why? Relativity, that's why. An object that has mass cannot travel at, or beyond, the speed of light and, while the Feruchemist could theoretically store all their mass in a metalmind in order to travel at these speeds they would have to have massless metalminds, which cannot exist, in order to do this.