I think that's pretty close to the truth. Like the Tao, you can point at instances of it, i.e., you can point to a particular team and the processes it is today using, and that is agile. But it is not Agile. On this same team I'm on, I've used different process a year ago, and two years ago, and now, and almost certainly in a year and two years. Those specific processes aren't Agile... but they were each agile, because we're constantly re-evaluating how we're working and what we're doing, and tuning our processes to match the environment we're in. If you take my agile process and just blindly apply it to your team, regardless of what that process is, that's not Agile. The grass of the field does not become a bird by shaping itself into wings.