So I take what I've read so far to mean you want to have a discussion about physical discipline?
If so, care to be clear? It would be helpful to further the discussion.
I had such discipline employed against me but for the most part, if I didn't perceive I had done anything wrong it was ineffective. A lot of my conscience came from the Lord and he occasionally used my parents to effect discipline from my perspective.
Most often I was placed on "restrictions" which for me would be no reading (and chores) but I was allowed to read the bible. Everyone else in my family was allowed to read when on restriction but for me that was pleasure. Each child is unique and physical punishment via a pain deterrent is only so effective depending on the person.
There were only a very small handful of times where my parents employed physical discipline. The threat was real and it was an active deterrent, but only up to a certain point (about 9)...past that it was mostly dishonoring the Lord and by proxy "honor your mother and father". Occasionally he stepped in like I said through them but obviously I cannot state each and every circumstance objectively as I was the subject.
There was only one instance where I specifically disagreed because I didn't know what I did (other than I was doing something) so I suppose the punishment was valid, but still to this day (and I discussed this with my mother a few times, she remembers me not getting it but not specifically why they felt it necessary) I don't know the "why" behind that though I have a few educated guesses.