If you’re an engineer, software developer, mathematician, or scientist, you’re probably already familiar with Randall Munroe’s excellent webcomic xkcd, which is one of my favorite comics. If you’ve never heard of xkcd, you might want to check out the most recent xkcd comic, which features model railroading by exploring the possibility of nesting HO (or is it H0?) layouts.
This xkcd comic embedded under the terms of the xkcd license, which is a Creative Commons Attribution-NonCommercial 2.5 License.
NOTE: When reading comics on the xkcd.com web site, be sure to hover your mouse over the comic long enough to see the alt-text pop-up for the image. There’s usually additional humor there as well. You might want to see the alt-text popup for this model railroad comic by visiting the xkcd website.