I have to be straight up here. I’m writing about digital noise in photos and I am going to tick off some readers who have different perspectives, some of them finely polished and honed by years of incoming BS. I’m not suggesting that these folks are stupid, but that they may have chosen to believe crap from some alleged experts, or are, to be blunt, doing things incorrectly and building skyscrapers out of tiny bits of Meccano.