Anyone who saw this:
The May-Irwin Kiss (Edison, 1896)
Would have never been able to imagine it would — or ever could — someday become this:
Avatar: The Movie (New Extended HD Trailer) (2009)
With digital books — Vook, Enhanced Editions, et al — we are at the stage of The Kiss.
But it will take us faster to get to the Avatar stage because we have more prior knowledge — and technology — than Edison’s crew did at the beginning of moving pictures.