Why does the modern state use quasi-judicial bodies?

The natural justice — the fairness's common-law principles: the minimum ethics of any decision- making that affects rights (the courts' and-the administration's shared floor). The meaning: not the "natural law" (the philosophy's confusion) — the judicial fairness's natural requirements. The scope of application: the judicial bodies (the courts' own trials); the quasi-judicial (the tribunals' adjudication); the administrative decisions affecting rights (the licences, the benefits, the penalties — the modern expansion); the limits (the legislative acts; the policy's choices; the emergency's narrow exceptions; the statutory-exclusion debates — the exclusions read narrowly).