On 4/10/26 my USPS mail included a postcard showing penguins at Shedd Aquarium in Chicago, with brief messages from three different people, each signed with a first name. So as not to get these people embroiled in this discussion, I’ll use their initials: E (common male name), I (uncommon female name), M (common male name). E’s message provided some crucial contextual information:
Ahoy, Arnold! Saw these really cute guys at the aquarium and thought of you.
I’s and M’s messages were about the penguins’ behavior they observed at the Shedd. E and M I couldn’t identify, but I’s name usefully picked out the only person I have ever known with this name, so I was able to send her e-mail about the card, which turned out to be deeply baffling.