Hmm...

The events I'm about to describe took place on Tuesday and Wednesday. The story itself is not particularly interesting, but there is one item in it which, on reflection, strikes me as rather odd. I'm not going to identify the oddity; I'm curious as to whether it will strike anyone else.

( The Case of the Peripatetic Classroom )

Okay. Do you see anything odd there? Comments, guesses, explanations?