[oldE]

Flint, I may be judging from a different standard, but I seems as all four goals were met.
I have no idea what retribution should look like, but he was arrested convicted and incarcerated, giving up his freedom for 15 years. I believe you stated in another post he should have got a life sentence. That likely would have negated the chance of the fourth goal.
Incapacitation was achieved, as he was no longer able to take part in criminal activity.
Deterrence seems to have been achieved. He did not murder again.
He seems to be a model for rehabilitation.
In an imperfect world, could much more have been achieved?
Perhaps if he gave his money to the White family it would temper some of the outrage.
Nothing will return their son..

Best
Les