Ever have one of those days where you start coding something in the morning, and by the time you look around you realize it's after dark? Today was a gorgeous day in Chicago, and at about 8AM I started trying to figure out how to model various exception-handling strategies in a multi-language context; by the time I was done I had four systems in PLT Redex and it was nine o'clock at night. Research is fun! Much more fun than, say, sunlight or social interaction.