This short story was written for the June 2014 issue of the Italian magazine L'Orologio.
Roberto Vacca by training is an engineer and a computer scientist. He has taught at universities in Rome and Milan, but has achieved fame in Italy and abroad as a science writer and as a fiction author. Probably his most famous novel is "Death of Megalopolis" (1974), and it can be found (with most of his other very interesting and very readable books), both in Italian and in English, on Dr. Vacca's site: printandread.com.
On this blog there are several other articles by Dr. Vacca, which I translated into English. This is about total war. This one is about the mechanics of free falling, and this is about writing and blogging, basically. Check them out, I'm sure you will find them interesting.
The picture of the clock tower, reflecting in the puddle, is by Miguel Duarte.
I'd like to thank J.J.P. for reviewing the English text, and to thank you in advance for your comments.