For email subscribers of the Digest: I migrated the newsletter to Buttondown a couple of months ago, and Buttondown claims to have identified 122 addresses as "undeliverable." It's to be expected that some people may have entered faulty addresses here and there, but in this case it includes a bunch of people I recognize. If you believe you are subscribed but do not receive this new issue by email in the next 48 hours, please let me know your email address. (It'll take time for Buttondown to process the list.)