So, Moshe and I BOTH worried about the fact that we’ve got two shadow mysterious figures showing up at the beginning of this book. Part of the problem is the rewrite, which mashed things together at the beginning of the novel, increasing the speed–but then melding things together as well. Originally, the mist spirit showed up before the Watcher. Now they both are introduced in the same chapter, which happens to be the second chapter.
That makes me worry about overlap and confusion, but we decided there was nothing to be done about it. As the story progresses, hopefully they’ll be differentiated enough in the reader’s head to keep them straight. (It doesn’t help that I have creatures in this world known as mistwraiths, which are different from either the Watcher or the mist spirit. Sigh.)
Metal vials. People may wonder why Allomancers use them. Why ingest only small bits of metal, which could run out on you? There are a couple of reasons for this.
First off, you don’t want to eat too much metal because, simply put, it’s poisonous. Kelsier talks a little bit about this in book one, and it’s given token nods from characters throughout the series. I don’t do a whole lot with it–dying from metal poisoning isn’t the type of extended disease you tend to deal with in a novel that only covers a few months time, like this one.
The second reason for metal vials is more simple. Allomancers with the right powers can Push or Pull on sources of metal–the larger the metal source, the harder the Allomancer can Push on it. So, little flakes of metal make a terrible Anchor, and so if you’re caught wearing your vials, you aren’t giving much of an advantage to your enemies.