“Written communication has increased with email, instant messaging, blogs, wikis, and numerous other Internet services. As readers we struggle constantly to understand these communications despite enormous pressures on our time and attention. Phil Yaffe has been offering Ubiquity readers simple principles that have helped make these written communications significantly more effective. A while ago he told us about ten general principles, more recently about three acid tests, and now a single principle for good sentences.” – (Philip Yaffe – ACM Ubiquity)