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It reminds me of the rise in the use of “architecture” in the software and business world. I’m sure true architects still bemoan the rise of “software architects” and “business architecture” and numerous other corruptions. The metaphorical use of architecture, as Wikipedia calls it, has stuck, as I think the metaphorical Digital Twin will stick. I think the Digital Twin Consortium definition is reasonable on the concept, but as you rightly point out, there is a lot of fluff that needs to disappear and more done on the real engineering of DTs. I think we can all try and point out when something is merely an algorithm, model, or simulation when someone is trying to say it is a DT.