I realize that I can sometimes sound like a grumpy old man. That’s the life of a Baby Boomer. I never complain about big things, only the silly things that aren’t really an issue; you know, first-world problems. I’m a big fan of the quarter-zip sweater. I have dozens of them. They’re warm, durable, and always seem to stay in style. But recently, I’ve noticed many stores selling half-zip shirts and sweaters, but they’re really quarter-zips. Retailers are now interchanging the terms when there’s a distinct difference. The name explains the length of the zipper…