A written work your actions can affect directly

Another Kickstarter project has caught my fancy, this time along literary lines. And the interesting thing about it is that it is already guaranteed (as near as anything in life is for certain) to come to fruition, though the precise form that will take shape is not settled at this time. Depending on the amount of money that will be raised by the deadline, the form of the physical book that Robin Sloan will write will take various forms. Already at the time time I write this it has passed the point of a routine print on demand volume, and with the remaining time and additional backers it could turn out to be something much niftier. It is an interesting model, not completely unique, I know, for a fiction writer to be engaging the audience during the act of writing itself, and not only on promotional tour only after the work has been put to bed. It is my guess that if it receives much more of a push from its backers it may cause some amount of commotion among those pondering the future of publishing itself.
I will spare you my further opining on complementarity between observer and phenomenon. It's really just a book.
The author has also written the very entertaining short story Mr. Penumbra's Twenty-Four-Hour Book Store featured recently and memorably. at Escape Pod, which I recommend to SF fans.
Update: Funded! Hundreds of percent over! And it seems as if the literary production is keeping pace as well, so it should all culminate in one fine-looking edition soon.
Update II:It is arrived and it is great.