But if CAPTCHAs are broken it might not be a bad thing, because it would signal a breakthrough in machine vision that would, for example, make automated book-scanners far more accurate.

Indeed, if you can get a wifi signal, you can buy a book.

A new book on the Titanic has suggested that the doomed liner did not send out a distress signal for three quarters of an hour after it hit the iceberg which ruptured its hull.