By being unable to solve anything at all? I mean, victims gotta talk to the police right, otherwise there are no crime reports? What about witnesses? When do

By being unable to solve anything at all? I mean, victims gotta talk to the police right, otherwise there are no crime reports? What about witnesses? When do you stop being a witness and start being a suspect? Is that when you stop talking? Or do you let the theoretical rapist walk free because after all you don't talk to the cops? It's a completely unsustainable position, and leads to a worse society in pretty much every measurable way.