It's an open thread!

We’re due for an open thread.  Now is your chance to bring up matters that would otherwise be off-topic.  For example, sometimes readers want to respond to something I said on Twitter/X (and write up such a comment under a post here – where it doesn’t get past moderation if it’s not on topic).  But feel free to bring up whatever you like.  From Cantor’s continuum problem to Canter’s Deli, from Gertrude Stein to grapefruit wine, from Jack Kirby to Kier Kirby, everything is fair game for discussion.  Just keep it civil and classy, as always.  Previous open threads archived here.