No, I didn’t know either, but online mag Wired has a fantastic (in all senses of the word!) article about presentations for/by architects in Japan where the rules for the presentations are simple: 20 slides for 20 seconds only each. Then you sit down.
Apparently the result is that the presentations are now much more useful and don’t contain any un-necessary bloat…. It’s worth five minutes of anyone’s time… :)
http://www.wired.com/techbiz/media/magazine/15-09/st_pechakucha#
