On Tue, 25 Jan 2011 09:16:49 +0000, Sacha wrote:

On 2011-01-25 08:55:53 +0000, said:
[...]

It's one of those diagrams that looks like someone has put a bunch of coffee
mugs down on a sheet of paper, and all the people go in the circles. So the
coffee stain is 'people who are posh' and the tea stain is 'people who own
chickens' and the bit where the tea and coffee stains overlap is the posh
people who own chickens. And people outside both drink stains are people
who aren't posh and don't have chickens.
Then you can put a beer bottle down to make another circle that is 'people
who microwave their pork pies'

Cheeky! ;-)) I'm in at least 4 circles already - does Dante know about this?

That was infernally witty.

WIWAL, we called them "Euler circles", which makes me the oldest in
the thread so far.
[...]

--
Mike.