Earlier this evening I was lucky enough to be photographing at an after-hours event at the Dulwich Picture Library (the world's first purpose-built public art gallery).  The event was hosted by the sponsors of an exhibition of works by M.C. Escher, who I was a big fan of when I was a student.  I still have an interactive CD-ROM which I bought 20 years ago, of Escher images, puzzles and animations, with audio clips by the great man himself, but I can't play it any more because it's for Windows 3.1/95 (with graphics at only 640 x 480 x 256 colours) and I don't own a PC or any PC emulator software.  I'm sure that if Escher was alive today he'd be producing even more complex and intriguing art with the technology that's available.  Online tickets are now sold out but if you visit the gallery's website you'll find out how you can still see the exhibition before it closes this Sunday.