> You can't prove or disprove anything with someone who refuses to comply with the courts.

I don't understand how someone could even think this.

Suppose he stole the loot and refuses to say where it is, but he really put it in a bank safe deposit box. The bank teller remembers him coming into the bank with a big pile of loot and then leaving without it, so you use the teller's statement to get a warrant to search the box, get the camera footage from the bank, etc. There are many ways to prove something without the suspect's cooperation.

How is the alternative supposed to work? The judge tells you to answer a question you'd only know the answer to if you were actually guilty and then you stay in jail for as long as you don't answer it? What are you supposed to do if you're innocent?