I was browsing through LPs in a charity shop this morning and I came across Nigel Kennedy's Four Seasons. One interesting point he made in the notes was that he felt that HIP had wrongly disregarded the wisdom that had built up over the last one hundred years or so. (I'm paraphrasing rather loosely here.)
But looked at from the other side it might be pointed out that in the above the word
wrongly should have instead been "rightly", and that the word
wisdom should have been placed in quotes. After all, the whole point of HIP is (as with the restoration of an 18th-c. portrait) to clean away all the grime and muck that has built up in the meantime, and to restore the product back to its original beauty. This, therefore, explicitly means 'rightly
discarding the "wisdom" that had built up over the last one hundred years'.
It also means however replacing such "wisdom" with a true understanding and
wisdom of the kind that existed at the time such music was conceived originally.