People think that it's magic, ... There's no electricity, no metal or screws or things that you have to plug in. It is so nontech, and you get to make the magic happen with your hands.
"Robert James Sabuda" is a leading children's pop-up book artist and paper engineering/paper engineer. His recent books, such as those describing the stories of The Wonderful Wizard of Oz and Alice in Wonderland, have been well received and critically acclaimed.More Robert Sabuda on Wikipedia.
I had to teach myself.