Sazed is not all knowing and we do not know that Kelseir proofread his work before he published it. In fact given that Sazed gave Spook his book only a few hours or days after ascending I am inclined to doubt it.
I actually thought of the same process with the added precaution of chaining the individual to be healed with metal so that they cannot escape. I do think that the breath would wear out eventually though as per the laws of thermodynamics.
Great question. Most causal readers and some serious ones seem to think that Willshapers will be combining their surges to teleport. We know that they are related to Kelek who is the Herald of artisans and craftspeople and that many Willshapers were explorers and inventors. They were also well known for their love of novelty and for being intolerant of authority.
No they are not. Hoid is surprised when he finds how the Rhyshadium have come into being and we know that he visited Roshar many years ago before his current stay. This indicates that they are normal horses who have adapted to the Rosharan climate.
I also would like to see them interact I think their relationship could be extremely interesting. At the same time I kinda hate how people assume that any complex relationship between a male and female character must be romantic. I do not think that a romantic relationship between the two of them could be anything other then dismal.
We see a herd of them in Dalinar's flashback and we know that they come from west of Alethakar. We also know that they were changed via symbiosis with a spren.
But the Fused do have different powers then Radiants. We see from Kaladin's perceptive that they fly differently and from Moash that they cannot lash him they way Kaladin can.
No, this is why it is a theory not an observation. My point was that you need to find a clever way of convincing stone that it can have a better time as something else you can't just use willpower. I thought of a potential way it could be done.