Folding Paper in Half Twelve Times

It’s an oft-repeated fact that you can’t fold any piece of paper in half more than 7 or maybe 8 times. The thing is, despite being quite easily provable on the surface of it, apparantly it’s simply not true. Britney Gallivan has not only managed to Fold Paper in Half Twelve Times but has also defined it mathematically. (reading the various articles it seems like the catch is that even though she is folding the paper in half, it’s not actually a square sheet.)