I can imagine a couple of ways that things might go from the tangibility stuff we're talking about this week. One topic to proceed to would be to explore the collaboration angles a little more; another would be to look at a different scale and talk about some of the recent work on urban computing as a ubicomp domain.
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I've set up this blog in order to create a space for discussion outside of class meetings for ICS 203B this quarter.
The primary reason to have it is to share seed our discussion sessions by getting some questions, reactions, and responses to the readings circulating in advance of the class meeting. The discussion leaders will manage the in-class discussion, but the in-class discussion should, ideally, both draw upon and lead to a broader conversation that we can carry on here. So, you should check here regularly, and post, too; it's all part of the same consideration of class participation.
The second reason to have it is as a place to share anything else that might be of interest -- URLs, news items, and other material that might be relevant to ubicomp and interaction issues. One thing you might want to look at is the LUCI (Laboratory for Ubiquitous Computing and Interaction) web page, at http://luci.ics.uci.edu, which collects some interesting materials.