Actions and reactions. Kelsier’s little explanation here is probably the most fundamental and important thing to realize about Allomancy—indeed, about a lot of my magic systems. I like to follow physics as best I can. I think it’s more interesting that way. Kelsier’s mention that you can’t just fling things around randomly with the mind is a kind of dig against Star Wars and other magic systems with telepathy.
Certainly, you could come up with systems that work they way they do. However, I personally find it more fascinating—and more logical—if a person is only able to apply force directly.
It really is the way the world works. You apply a pressure, and something moves in that direction. For strong forces, people can only push away from themselves or pull toward themselves. It makes perfect logical sense to me that a magic system would work that way.
Of course, I might just be a loon for trying to apply so much physics logic to magic in the first place.
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