The only thing which invitees have in common is that their name appears on my e mail contact list, otherwise, they mostly don't know each other. The e mail went to about 70 people. One thing which was immediately fascinating to me was how many, and who, might respond. As it happens, nearly half did. As an aside, and a reference to how one might scrutinise the mundane, it is interesting that one of the adverts from the screen shot includes "Freemasons Cufflinks" which I suspect appeared because one of the respondees made reference to Freemasonry. As we watch the world, we are all, it seems, being watched.