There is a footnote for Sunday's comic, but when I wrote it I only uploaded it to the queue for the iPhone app. I suppose if the app were in the Apple Store already I could have used this "mistake" as an opportunity to drive sales. But the app is NOT in the store yet, and the beta has ended, so the only people able to read the footnote right now are me and the developer. The footnote will go live on the web with Monday's update. So... just as soon as today's comic is yesterday's comic you can read today's footnote. As a bonus, I'll throw in a footnote for yesterday's comic, too.