Wrtie4U: Yes. In general, no. Technically, no. The pattern is an abstraction we recognise in (or impose on) the particular arrangement of constituent parts etc. I don't know what that means, so I can hardly deny it. You quoted some definitions. Here's one: a pattern is a regularity in the world, in human-made design, or in abstract ideas. The word "abstract" comes up over and over again in the discussion of patterns. A pattern is a concept, fundamentally. Why is this so hard for you? Well, using the above definition, anything lacking regularity has no pattern. We tend to distinguish regular, repeating, things from other things that lack those regularities or repetitions. Do the things recognise their own patterns, or do we thinking beings recognise the patterns? Can a pattern exist without a mind to conceptualise it? How about this: 0001100101111111101101100001? Does that have a "pattern", or not? If it does, is it something somebody imposed on it, or something innate to it?