I believe both the US and UK (as do most western countries?) have 'common law' systems, where jurisprudence / case precedents are heavily relied upon. Whenever

I believe both the US and UK (as do most western countries?) have 'common law' systems, where jurisprudence / case precedents are heavily relied upon. Whenever there is doubt on the legality of something, that court decision will set the tone for others to follow, and go higher up the justice system as needed. The main point was that you can't simply blame the law for failing to 'replace judgement'. Most laws rely on some amount of common sense to be interpreted.