I have spent the last twenty years hacking my nonexistent socks off to build the technology with which I accompany my teaching. Some observations

1. Students see that I write programs, unlike the people who officially teach them programming.
2. We get to talk about how they feel, as users, about a technology that could get better if we figured out how.
3. I am never busier programming than when I am teaching, and the irony kills me.