The cycle of tradesmen. Tools go in the toolbox, toolbox goes in the cabinet, and then the cabinet goes in the workshop. It's just a line of progressively bigger boxes to store your shit.
Madness string 111714
There's no way to know. The event horizon hides everything from us. The matter in a black hole could be just barely smaller than the horizon and we'd never know. It could be emissive, but any glow just falls back in. We just don't know.