I love how freaking cute this one turned out! The dog and cat characters are from the first blog post I did for mtlynch.io about how to do code reviews.
This one's about how test code has very different goals from production code, and the need to carefully consider the appropriate approach to the latter. Just as a house on the beach will require a completely different design than a skyscraper.
I also really like how my draft for this one came out! 😄