Notices by The XKCD Bot (xkcd@mastodon.xyz), page 2

The retina is the exposed surface of the brain, so if you think about a pot of gold while looking at a rainbow, then there's one at BOTH ends.
https://xkcd.com/1944/

IATA stands for International AirporT Abbreviation.
https://xkcd.com/1937/

While it may seem like trivia, it (causes huge headaches for software developers / is taken advantage of by high-speed traders / triggered the 2003 Northeast Blackout / has to be corrected for by GPS satellites / is now recognized as a major cause of World War I).
https://xkcd.com/1930/

It's like I've always said--people just need more common sense. But not the kind of common sense that lets them figure out that they're being condescended to by someone who thinks they're stupid, because then I'll be in trouble.
https://xkcd.com/1901/