5.4 Theories of Punishment

5.4.1 Retributive TheoryPunishment as intrinsic desert: the offence's guilt demands proportionate suffering — Kant's blood-guilt metaphor (the island's last execution — name only) and Hegel's annulment (punishment as the crime's negation, honouring the offender as rational). Merits: proportionality's ceiling (no punishment beyond desert), the victim's vindication, non-utilitarian dignity (no person as example-expendable). Demerits: suffering added to suffering; no forward look; the revenge problem (who gauges desert?).5.4.2 Deterrent TheoryPunishment as threat-management: the pain must outweigh the gain (Bentham) and arrive with certainty and celerity (Beccaria) — general deterrence (the potential offender's calculus) and individual deterrence (this offender's lesson). Merits: the evidence supports certainty-effects (policing and probability, Unit 4); demerits: severity's weak marginal return, the crimes of passion and compulsion that no calculus reaches, and the brutalisation risk — deterrence is a theory of the system, not only the sentence.5.4.3 Rehabilitative/Reformative TheoryPunishment as reformation — "hate the sin, love the sinner" the sentence's aim is the offender's return as a law-abiding citizen (education, skill, therapy, probation's supervised trust). Merits: recidivism-reduction's evidence base, the dignity of second chances (the Constitution's rehabilitative spirit — Art 21's "social rehabilitation" written for victims but echoing through corrections). Demerits: desert's neglect (the light touch on the grave), treatment's failures and coercions, resources' demands — and the honest cap: not every offender can be, or wants tobe, reformed.…