[kevin_thibedeau]

The paper is a critical technological innovation. It shrinks upon drying, turning the sheet into a prestressed panel. Predecessor manufactured wall materials like Beaverboard are much flimsier because they lack a taught skin that enhances rigidity.

[mrexroad]

it's pretty cool how the paper faces effectively provide all the strength by creating a torsion box w/ the gypsum in the middle.