A problem in the study of what happens when black holes form is that at such insanely small scales the general relativity model of gravity breaks down because o

A problem in the study of what happens when black holes form is that at such insanely small scales the general relativity model of gravity breaks down because of quantum effects. A similar problem occurred in the formation of drops and bubbles where at those tiny scales right before it pinches off molecular effects come in to play. However, through a mathematical method, scientists were able to ignore those molecular effects. Black strings are entirely hypothetical. Scientists are hoping they can be pinched off in the same way as bubbles and that, if they can, they can use the same method above to ignore quantum effects (in the way molecular effects are ignored in bubbles). If so, it could (theoretically) be applied to the study of black holes, allowing scientists to study black holes without a quantum theory of gravity.