I've told you, haven't I, that I work for a firm of engineers? A couple of months ago, I finally did the health and safety course that would allow me to walk the building site at Site. I've walked the site a couple of times since then. It's interesting seeing where all the money has gone and identifying those components for which I actually remember the vendor invoices. (Not many - we've had almost 6000 invoices since we started.)
Last time, I went out with two of the cost engineers - one is an accountant by training, the other a quantity surveyor. We wandered around and pretended we knew what we were looking at, playing engineer.