> Remember back on Mr. Roger’s Neighborhood when he would take you to a factory and show you how pencils or umbrellas are made? I love that stuff, so I thought maybe you might like to see what I spent the past year on. You can read this as a peek behind the curtain, or maybe a long apology for why it took so long.

This is a great way to lead into the article. The author pulls off something that turns out to be extremely hard to get right: Interweave humor and slightly off-topic material into a technical post. Most of the time it falls flat, but not here. Looking forward to reading further.