Well, we're on your side. As the seasons change, a sweater vest is any easy way of adding a layer for warmth (and style) while still keeping relatively cool on those sunny autumn days. They look great with a rumpled oxford on the weekend, under a blazer at the office or even with a slim polo on the golf course. Of course, he's not entirely wrong in his assumption—there is a slight poindexter feel, but what's wrong with that? It's called geek chic for a reason.

• Who you callin' nerdy?
  See Doug, Archie and Seth Cohen.

Merino cable knit, $119, at Ralph Lauren