QUOTE: Paper piecing is foundation piecing but not all foundation piecing is paper piecing.
Kinda like all chickens are birds but not all birds are chickens?? That makes sense.
QUOTE: When you say folded 3-D quilts, you might be talking about Origami quilts. Those are really cute. Alex Anderson had a show about it, where the fabric was folded like flowers and then sewn to a quilt top.
I saw a quilt where instead of triangles sewed into the top, example basket, they used folded squares. You could slip your finger into the folds of the fabric after it was sewn it. It was pretty cool, just looked complicated to make.