I'm afraid I do.
Once upon a time, I could quote regs numbers, but i seemed to have developed a type of dyslexia to all those numbers now lol. Too many regs referring to other regs for my liking.
When I update with a 17th edition course, I thought I was boy wonder again, but its all gone to mush again since :-(
I reckon I could still kick some arse installing MICC, making trunking sets that have near enough been banned, and bashing in some conduit with some intricate bends, but having spent most of my career on that side of the industry, I am almost enjoying catching up on the other side of things, and apart from my reference books, find many posts here enlightening.
I do believe when I attended college all those years ago insulation resistance and ring continuity with a wind up megger was about the most testing that happened. It could just be my memory though.