Most of you are probably familiar with the feature on some commercial Web sites whereby they grab the topic about which you are expressing interest and make you other related offers. So, for example, if you google the word "cameras," an ad along the side will say, "Get CAMERAS used and new on eBay."
Occasionally, this technology generates not so much targeted advertising as humor. On Amazon today, after I searched for a particular book, a line down the page offered me this extraordinary possibility:
Vatican II Tickets on Ticketmaster
www.ticketmaster.com Still great seats left. Buy Vatican II tickets.
The problem of time travel aside, I confess that I would be willing to pay a pretty high price for a seat at an ecumenical council.