This is telling.<quoted text>Actually, discipline is not punishment.
To me, they are the same. They are both administering a disincentive to modify future behavior.
I'm guessing that the way that they can seem different to you is if you consider punishment payment for prior bad deeds rather than a disincentive to discourage future bad deeds.
That's retribution, which is a prominent meme in Christian psychology. I think we discussed this - Catcher did most prominently - when discussing the rationale for incarceration. Disincentive to others not to do the same, yes. Remove a menace from the streets, yes. Rehab an offender, yes, if only we knew how.
But revenge? Payback. Punishment for its own sake? That's where the Christians and humanists parted ways. We see that kind of thinking as flawed and counterproductive, whereas it it is central in Christian doctrine. What is hell for if not to administer pointless and useless suffering?
Of course, people raised in that ethic want prison to be as brutal as possible, too. So, even though the official punishment by the court was loss of liberty, in the absence of a humanist presence in the prison, the actual punishment will include rape, terror, degradation, violence, and every other idea also associated with hell.