APOLOGIES: Contact function has been broken for two months
Oh my. Through a trail of little clues (and thanks to Michael Goldberg of MDV in Menlo Park, who tried to contact me another way when he got no reply to a message left here), it turns out that the "contact" function on this site has not worked for at least the last two months.
If anyone tried to send a message that way, I did not receive it and it probably no longer exists anywhere.
Sincere apologies. There is a quasi-understandable technical explanation of why this happened, but mainly I offer my regrets. It works now. I do try to respond to people who take the trouble to write. (Most of the time.) JF.