What's the Maximum Information in a Black Hole?

There's this kind of paradox, right? We think things splat on the surfaced, but according to the people going in, they go inside. And hawking and this other guide, beckenstein, were working on this and trying to understand where's the information in a black hole? How does it actually work? They were calculating how much information can be incoted inside a black hole. It doesn't depend on the radius cubed, depends on the radius squared. That suggests that maybe these are just two dimensional objects. Like an infinitely thin sheet of paper would also be a two d object. So that's where this idea of a holographic universe comes from.