>The real flaw in the argument of the parent is, that in a direct comparison between Singapure and Norway Norway still wins: If roughly the same recidivism rates are achieved in a very punitive and a very supportive system, the supportive system is superior according to utilitarian principles.

Wouldn't that depend on subjectively balancing costs and benefits of the other involved factors? For example, Singapore's system may (or may not, frankly I don't know and it's not important to the logical point I'm making) cost less than Norway's system. In that case, the question would be what value the society places on finding solutions that are supportive rather than punitive.

Right?