Since ever I have a particular distaste for tabus, shall nots, and ought nots, specially when they go against nature time trials. We are physical entities that express themselves physically...one thing is to make a case for balance, all very well, society is build on it, quite another, to raise an ABSOLUTE rejection of physical punishment as a legitimate mean for EDUCATION in specific circunstances. This stance of mine is off topic as you will see me reject many other things on the same basis. Again I really do get annoyed with common sense fashionable certainty and all its obviously you shall not this or shall not that...almost nothing is obvious to me since I noticed I had a head between my shoulders, much less this modern bull that a few slaps have no usefulness. Sometimes speaking just doesn't make the point tangible enough. Pavlovian conditioning it is indeed sometimes the best educative solution, specially with very young people.
Curiously we live in an age with severe psychological violence and trauma where PTSD is no longuer exclusive of war veterans....funny enough people are fine at each others throats destroying people mentally and emotionally but so long there is no touching all is ok...modern world is hands down total scitzophrenic, a melting pot of contradiction and sheer symbolic nonsense.