Brent Simmons, writing for Inessential.com:

Along the way I’ve had many moments where a thing I’d written years before — because I knew I would need it — suddenly becomes useful. For instance, I wrote the OPML parser early on (one of the very first things), and it was only years later when I added OPML import to the app. (There wasn’t even an app at all when I wrote the OPML parser.)

Those moments are great. The pieces start to click together, and you realize you planned well.

I’ve had these moments before. I only expect them to become more common once Marzipan arrives in the hands of developers.