In Errol Morris' terminology OFF
This might well be a first and then it might well be a last. Errol Morris writes a post in his NYtimes blog about two photographs by Roger Fenton from the Crimean war. They're up at the top of the post. After you've done the find the differences search, you'll realize that there are a few extra cannonballs in a new place. Are you tempted to infer a little hanky-panky? Primed by so much of it happening just recently, I certainly was.
In Errol Morris' terminology ON
"Nothing is so obvious that it’s obvious. When someone says that something is obvious, it seems almost certain that it is anything but obvious – even to them. The use of the word “obvious” indicates the absence of a logical argument – an attempt to convince the reader by asserting the truth of something by saying it a little louder."
Read the post and the comments to find out why it is not so obvious. A lovely piece of photographic sleuthing. Also neat observatiosn from participants in the discussion. The internet is wonderful thing!