The article shows that digital twin technology is not just affecting how buildings are designed and used, it is also impacting on how they are constructed. In the case of the architectural and construction sector, the digital twin arrives as an upgrade on its worthy predecessor, BIM. Building information modelling has been around for over a decade and theoretically stays with a building through its concept, design, construction and operation. The article states that the problem with BIM, is that it is misused both as a term and in its function. Stakeholders still misuse the term and say that it's just a piece of software I need to have on this project. It's a fundamental requirement now of government projects in the UK and that's increasingly the case globally. But it is not one software package, it's an entire process that informs the entire construction.