The three rules for effective (scientific) communication: adapt to your audience, improve the signal-to-noise ratio, and use effective redundancy. These rules apply to every form of communication: articles, abstracts, e-mails, posters, oral presentations, websites, graphs, reports, manuals,...I was lucky enough to attend a series of Jean-Luc's lectures at the very start of my PhD, and it has improved my scientific output tremendously. I can only imagine how I would have struggled to get my articles, posters and presentations right without his advice, and I have received many positive comments about them ever since.Simply a must-read for every scientist (student, professor, researcher, manager) who ever needs to write or present (in other words, everyone). Don't wait, read it now!