(this page is part of the Family Guide to Digital Freedom, 2007 edition. Please do read that introduction to know more about the Guide, especially if you mean to comment this page. Thanks) What do a UK prime Minister, a US warship and a fighter plane have in common? They all were put in danger, or at least in quite embarrassing situations, because of poor design, use or understanding of software, or at least of the policies that should regulate its use.