Thank you leeneia, you've reassured me enormously;

I have to have a little boast here, because I do my 'Sporcle' quizzes quite often and score full marks each time. They involve rattling off all the 118 elements in the Periodic Table, all the States of the USA and all 54 countries of Africa. I do it just to prove to myself that I still have what passes for a brain.

Perhaps I couldn't remember where I'd left the dustpan and brush because subconsciously I wasn't terribly interested in sweeping the kitchen floor...