The reason cats shed so much is that they are trying to reach cat hair equilibrium. Cat hair equilibrium will occur when the surrounding space has the same density of cat hair as the place from which the cat hair emanates, namely, the cat. Under this theory, the cat will eventually stop shedding once we are so deep in fur that we are unable to breathe.
A corollary to this theory is that diffusion occurs faster when the gradient between the high density fur area and the low density fur area is larger. That is, the more you vacuum, the faster they shed.
Related: #2 claims this furminator reduces her cat by 10% upon use. It doesn’t seem to stop him shedding, but it does make him smaller! Perhaps there is a complex equation about changing surface-to-volume ratio. One time (on a previous cat) I decided that I would keep brushing until he either quit shedding, or was naked. After an hour neither had occurred, and I gave up.
Do you all have any corroborating or denying evidence? Alternate theories? Stories of ginormous cat-hair tumbleweeds?