It's crazy how fast Dalinar is

Able to go from being completely illiterate to having his first manuscript for Oathbringer ready. He manages to learn to read, learn to write, and complete his memoir in the one-year time skip, all while fighting a war and leading the coalition. It's not a simple book either, it's part autobiography, part philosophical work, and part religious text, and Jasnah says that it's primarily religious, suggesting that his lengthy life story is only the minority of the text. Does Brandon Sanderson think that anyone can write as fast as him?

Also, as I wrote this, I realized that he has the Surge of Connection. This means that he either couldn't use it for writing because he was illiterate, didn't think to use it, or that Connection just doesn't work on written word.