(incidentally, I've never been convinced by 'uh-oh', it doesn't represent the way I say it, but what do I know - there's an ongoing debate in my house at the moment about the pronunciation of 'soldering'. Canadians say some things really oddly...)
So, I'm pretending to be a student for a day. The lecture theatres are just as cramped and uncomfortable as they were back in my day, the technology's way better. I'm learning about using social media to promote myself.
Watch out. And -preemptively - I'm sorry for spamming you!