I have a vague understanding of pivot, never really needed to know more than that. Sort of glanced through the article with a "meh" attitude, but after reading

I have a vague understanding of pivot, never really needed to know more than that. Sort of glanced through the article with a "meh" attitude, but after reading your anecdote, decided I should read it properly and added it to my reading list (which actually does get read!). Thanks.