Yep sure, but this isn't about making a big game and crunching, hopefully we will get that across. It's about trying to promote what we think could be a big genre in games that doesn't really exist. Most of us decided to do it after a conversation in the pub and we just thought we would invite more people. The physical part is 2 days just to hang out but the Jam itself lasts a week and we will be asking people to simply submit whatever they come up with in that time :)
A longer amount of time is quite often a big burden on peoples work and lives. We'll see how it goes and maybe do something different in future.
Thanks for the great links, we (the organisers), have been discussing slow food and slow TV a lot!