I've adapted this comment from Peter Woit's blog (about the announcement http://gesalerico.ft.uam.es/strings07/ for the Strings '07 conference in Madrid): ...the emblem on the main page of the Strings ‘07 website is a 1789 oil painting by Goya called THE BLIND CHICKEN (La Gallina Ciega) or translated into English “Blind Man’s Buff”. The blindfolded girl is in the center of a circle of dancers, who elude her attempts to connect with them. There is a sunset, the players are aristocrats, it is pretty but inexplicably melancholy. To get further information about the Strings ‘07 conference, click on individual dancers in the circle. http://gesalerico.ft.uam.es/strings07/ To me, the blindfolded young lady in the middle of the circle looks like an allegory of M-theory, something which so far has never been seen. She is surrounded by elusive entities joined in a ring by the duality of holding each other’s hands. It seems to be an emblem of the Unknown M-theory surrounded by superstring possibilities. It's a witty conference logo, one of the cleverest and most attractive ones I've seen. The list of speakers at the conference is here: http://gesalerico.ft.uam.es/strings07/040_scientific07_contents/041_speakers.htm (thanks to Peter Woit for alerting us to the site!) The idea of using a blindfolded aristocratic young woman as an emblem of an as yet undiscovered theory (believed to occupy the center of a circle of connected others) is remarkable! click on individual dancers in the circle to get further information about the conference a sympathetic view of string thinkers, in fact, could I guess be that they are like men trying to hit something moving with a stick, that something being a theory which they cannot see but believe is there---a groping image similar to what one sees in Goya's painting.