Did anybody's eyes widen at all when Rian, the guy Marasi apprehended before he could shoot the governor, started humming towards the end of the chapter, and wouldn't quit? It immediately made me think of Hoid humming in book 3, when Vin felt uneasy and bolted. In that book, Vin's intel said that Hoid was often humming, yet we don't see him humming in any other book. I think humming may be significant on Scadrial, though I haven't a clue in what way. Thoughts?