Sacramental validity on his blog Liturgiae Causae. Whilst I will not pretend to agree with everything that he has to say he makes an excellent point to do with faithfulness to the rubrics not just for modernists but also for some traddies.
'What constitutes ''traditional'' in Tradworld? Is it preference for lace cottas to polyester albs? Or perhaps the Deacon chanting Benedicamus Domino on Corpus Christi? Yet such photos as the Palm Sunday one are spread about the traditionalist blogs as though they are a boon for the Church! '
Traditional Catholic belief is not about externals, the cut of your maniple has nothing to do with theological orthodoxy, indeed an almost pathological obsession with aesthetics could well indicate a smoke screen for serious theological error. It was once quipped, in a satire, that a certain 'ecclesial' movement was dying from 'gin, lace and backbiting' and that's the fear that I have for some quarters of the traditional movement.
Patricius' timely reminder gives two examples, with photos, both of which would be considered 'valid', perhaps not licit but certainly valid. I would want to add that whilst it is much harder to stray into 'grey areas' with the traditional rites when you do it is a serious matter for the celebrant and his confessor. The traditional annual priests' retreat used to include an observation by a peer of how the retreatant said Mass. The retreatant then returned the favour. But back to Patricius;
'I never cease to be amazed at how little the clergy know about Liturgy - some years ago I MCd a Sung Mass where I had to tell the Celebrant to kiss the Altar and say the Orate Fratres - at the time I thought ''how many years have you been saying Mass?'
I do have some sympathy here with the poor celebrant. Like there are people who shouldn't be let near a car there are those who shouldn't be let near a sung Mass. Ten years on since ordination I'm afraid I couldn't celebrate the sung form of the rite with any confidence or accuracy. I also don't drive. Neither would edify the faithful.