When I was a kid, I was fascinated by my grandma Carrie's collection of tiny frog sculptures. One day I asked her why she started collecting them, and her answer was a shrug. She couldn't quite recall how she came into her fleet of froggies. Sometimes these things just happen. I always mean to start a collection, but never commit. I have three vintage yardsticks yearning for more companions. I had three pretty plates that I was planning to stagger across a kitchen wall one day, but I broke one, and so I'm now down to two, and can't see this collection flourishing any time soon. Not too long ago, I learned about my friend Betsy's impressive cardigan collection, currently numbering in upwards of 50 specimens. I started asking her to elaborate on how this happened. And so we started a little project. And that's all I'm going to say, for now.