spent the day yesterday at exploratorium with my niece and a few friends, and ran into other friends, and, as usual, with my niece, as always outgoing and gregarious as she is, met some new ones. anyway, there was a rubik's cube tournament, worldwide international record-breaking tournament, where the best of the best in the world did the rubik's cube in like 15 seconds, and/or in a minute blindfolded, and stuff like that. and as my niece was wont to say, and i heartily agreed, 'i can't even do it in an hours.' so, watching them do it, was pretty amazing.