Every once in a while an exchange happens in the Comments to an article that is more valuable than almost any other part of a football blog. Those exchanges often inspire me to write an article on the point. Today I would like to go further, and actually quote a recent back-and-forth I had with posters Jeff Burton and HinesWardFan on Matthew Marczi’s article, Buy Or Sell: Daniel McCullers Will Be Steelers’ Primary Nose Tackle. I have edited only for clarity, and invite you to revisit the source if you want to double check.