In the comments to the Leibniz post, Felix Driver writes
On a quick search, incidentally, I came across this interesting-looking conference on “Space, geometry and the imagination” at the Max Planck later this month at which Farinelli is speaking – see http://www.mpiwg-berlin.mpg.de/PDF/2012-08-27%20Space.pdf – if anyone is going, it would be good to see a report somewhere.
I’ve reposted here as it does look interesting and may be of more general interest – and more likely to be seen as a post rather than in comments.