It takes about 200 workers to assemble a pop-up book. This is done by hand - you can't automate the process. It's intricate, and precise, and every spot of glue needs a distinctly human touch. Designing such a thing requires an illustrator who can think in disjunct pieces, and a paper engineer who is almost always self-taught in this most obscure of specialties. It's a unique artform with a rich heritage. And, naturally, we hand the delicate sum of these efforts to our children, with their limited motor skills and overwhelming desire to draw on or eat all objects in the known universe.