I do have my copy at hand. While they do try to get across the concept that not all patterns are suitable for all cases they do a remarkably poor job of it. The "applicability" section of most described patterns is a simple bullet list of 3 or 4 very vaguely worded sentences. This is, as evidence has proven, wholly insufficient. There should have been much more effort into trying to educate readers on the applicability, and non-applicability!, of each pattern, explaining the constraints that made the pattern necessary or desirable, laying out examples of other ways to achieve the same functionality, and also explaining the costs and extra complexity of relying on a specific pattern.