I wouldn't call black holes "emergent". They do behave very similar to other gravitational objects -- just more "extreme". Another example are atoms: Most of t

I wouldn't call black holes "emergent". They do behave very similar to other gravitational objects -- just more "extreme". Another example are atoms: Most of their properties are easy to predict from the properties of their constituents and from the physical laws: The mass of atom is the sum of the mass of the constituents, minus the binding energy, which we can easily predict. But, for example, nucleon mass is emergent. Most of it is created dynamically by QCD, and we cannot easily predict it. We can, for example, not easily predict how the mass changes if we change properties of quarks or gluons. A brute-force lattice calculation is required. Weather is a similar example. We understand the basic rules, but weather patterns are only predictable with limited success and a lot of forward simulation.