In my daily work, I do a lot of deployment of agile methods. I try to keep the message simple. A good description of Agile is the Agile Manifesto. The text is easy to read and the is no doubt what the message really is. People I speak for have no problem to understand the ideas behind Agile when reading the Agile Manifesto.
Sometimes you stumble upon description where the author hade a good intention, but the result is terrible. Look at this poster from oose Innovative Informatik:
Is it obvious to you? I just get confused. Can anybody understand what Agile is by looking at this? I don’t think so.
Look at the Agile Manifesto instead: