We've just said good bye to visitors from Australia, a friend of my hubby's from way back and his 34-year old son. They are on a mission to South Africa to follow up the wife's family tree - and already have an impressive record of her Dutch ancestors going back to 1200 AD. It's been a challenging two days for me, when I discovered how weird it is to try to have a conversation with a young man who is a super brain, not only in science and Math, (the son heads up a Eurasian IT team - just back from a business trip to Vietnam), he also seems to have total recall and polished off the last four clues of my cryptic crossword in a matter of minutes. (I've been working on them for days). He has also built himself a telescope in his spare time, grinding the lens himself and has a camera with which to photograph the night sky. In between, he is an amateur radio enthusiast and lugged his equipment all the way here to take it to the top of Table Mountain to try to contact someone elsewhere on the planet. Apart from that, he seems to be knowledgable in every field imaginable and therefore has to try hard not to dominate conversations. On the plus side, he is a quiet, polite and I think modest person, who does not talk down to one. He reminds me of that super charismatic and charming Professor Bryan Cox who makes these marvellous TV programmes for the BBC. On the down side, I can't think of any time in the last two days that he asked either myself or my husband a single question regarding our lives, our country or our family. He admitted that he is wrapped up in his own world and struggles to switch off his brain: he has found one method though - he hums the tune from The Great Escape to get himself to sleep. I asked him if going to a Co-Ed High School had helped him to get on with girls and received an emphatic "No". I am not surprised - I remember him as very skinny and nerdy at that age, although I don't think it bothered him. Now, he has the legs of a hiker and has filled out a bit. In fact, a nice-looking thirty-something now, married with two girls. I am just sorry that I couldn't have introduced him to my brother and his boys. They would have had so much in common.