i really loved the 24/7 exhibition at somerset house. it's on until 23 feb. inspired by a book by jonathan crary's book of the same name it explores the always on nature of our lives. i found it powerful, challenging and in some ways a bit disturbing. there are a whole range of installations. the photos above are from one that alternates between a relaxing slow moving sleep state projection through several layers of perspex (the top image) and then switches to projecting real time tweets including the word sleep from a part of the world (the second image). it's made by a company in somerset house who interpret data. the tweets made you feel like it's no wonder we struggle to sleep at times! this was simply one among many brilliant pieces. one of may favourites was some alternative design watches which i didn't photograph but they played with time in very different ways. this would be an ideal exhibition for lent but it finishes just before. go if you get the chance…