In reply to David Coley:
Good stuff. It's like a lot of things - know that, know that etc. But there's nothing quite like someone slapping you around the head and pointing it out all at the same time to make you think. And no, I didn't know it all and yes, I did learn something, and yes, I did learn some things again.
I know, for example, that I happily clipped into a big bunch of fresh tat with a new ring to which my partner was belayed. I then set an abseil and abbed off without actually checking for myself that all the in situ stuff was good. The person who placed the ring was at the bottom too and had only placed it the week before (so what......)
As I waited for my partner to ab off, I told myself that I was a tit. Well, at least I got that bit right.