[SPBesui]

Maybe I missed it, but there doesn't seem to be any credit given for the xkcd comic (https://xkcd.com/208/) shown on the Next Steps page (https://refrf.shreyasminocha.me/chapters/next-steps). Does Randall even require it?

[shreyasminocha]

He does require it per CC-BY-NC-2.5. I felt it was sufficient to permalink to the version on his domain, but I shall make it more explicit.